10. Open the brackets.

A. 1. Today he (tell) you if he (play) chess with you on Saturday evening. 2. We (be) not sure if this friendship (last) long. 3. I wonder when he (return) my finest collection of records. 4. Many people believe that the time (come) when there (be) a universal parliament of the world. 5. The poor fellow (wonder) if the next mail (bring) better news from home. 6. I (not know) if the local people (be) friendly to my family in the future. 7. The secretary (want) to know if the new Head (make) any changes. 8. The doctor can’t say now when the patient (recover). 9. Tell me if you (finish) your book in summer and when exactly you (do) it. 10. People standing at the bus stop (wonder) if it (stop) raining soon. 11. Nobody (know) if he (keep) his promise. 12. I wonder if he (be) late again. 13. My dressmaker (have) no idea when my wedding dress (be) ready. 14. ‘Why are you measuring the cooker?’ — I’d like to see if it (fit) in my new kitchen. 15. Tell me the exact time when they (come).

B. 1. Wear your overcoats in case the weather (turn) colder. I wonder if it (snow) as well. 2. My friend (feel) much better if she (lose) some weight. I am not sure, though, if she (make) an effort to eat fewer potatoes. 3. Marina (ask) if she (get) the job as soon as she (learn) the language. 4. We (not know) yet if we (get) our visas, but as soon as they (give), we (see) London. 5. I (take) all the files with me in case my boss (need) them. But God knows when he (remember) about them! 6. You (feel) great relief when the temperature (fall). But it’s difficult to say when it (go down) – понижаться. 7. I wonder if the plane (come) on time if the weather (change) for the worse.

C. 1. I (go) and see Venice as soon as I (reach) Italy. 2. If the sun (be) red, it is a sign that we (have) a fine day tomorrow. 3. If you (not be) at home by six, I (eat) without you. 4. If Mother (not go) to the market early, she (not get) fresh fish. 5. If Adam (sell) his car, he (afford) a holiday in Florida. 6. Take some coins in case you (need) to phone. 7. If nothing (go wrong), they (deliver) the furniture today. 8. Unless you (change) your mind we (not be able) to help you. 9. I (take) an umbrella in case it (rain). 10. If your son (not wear) sensible shoes on those hikes– прогулка, he (get) blisters – водяной пузырь. 11. If Martin (not win), it (be) the end of his sport career. 12. I (be) happy if my dream (come) true. 13. If the situation (get) worse, I (lose) my job. 14. Unless he (hurry), he (miss) the 5.30 train.

A. 1. Today he will tell you if he will play chess with you on Saturday evening.
Explanation: The sentence is talking about something that will happen in the future. When we are certain about something that will happen in the future, we use the future simple tense (will + base form of the verb). In this case, "he will tell you" and "he will play chess" are the future actions.

2. We are not sure if this friendship will last long.
Explanation: The sentence is talking about something uncertain in the future. When we are uncertain about something in the future, we often use the future simple tense (will + base form of the verb) to indicate uncertainty. In this case, "this friendship will last" is the uncertain action.

3. I wonder when he will return my finest collection of records.
Explanation: The sentence is expressing a wonder about when something will happen in the future. When we wonder about future events, we use the future simple tense (will + base form of the verb) to indicate the future action. In this case, "he will return my finest collection of records" is the future action.

4. Many people believe that the time has come when there will be a universal parliament of the world.
Explanation: The sentence is expressing a belief about the present situation ("Many people believe") and a future situation ("there will be a universal parliament of the world"). In the second part of the sentence, we use the future simple tense (will + base form of the verb) to talk about a future event. In this case, "there will be" is the future action.

5. The poor fellow wonders if the next mail will bring better news from home.
Explanation: The sentence is expressing the subject's wonder about a future event ("the next mail will bring better news from home"). When we wonder about future events, we use the future simple tense (will + base form of the verb) to indicate the future action. In this case, "the next mail will bring" is the future action.

6. I don't know if the local people will be friendly to my family in the future.
Explanation: The sentence is expressing uncertainty about a future event ("the local people will be friendly to my family in the future"). When we are uncertain about something in the future, we often use the future simple tense (will + base form of the verb) to indicate uncertainty. In this case, "the local people will be friendly" is the uncertain action.

7. The secretary wants to know if the new Head will make any changes.
Explanation: The sentence is expressing the secretary's desire to know about a future event ("the new Head will make any changes"). When we talk about desires or wants regarding future events, we use the future simple tense (will + base form of the verb). In this case, "the new Head will make" is the future action.

8. The doctor can't say now when the patient will recover.
Explanation: The sentence is stating the doctor's inability to determine a future event ("the patient will recover"). When we talk about inability or lack of knowledge regarding future events, we use the future simple tense (will + base form of the verb). In this case, "the patient will recover" is the future action.

9. Tell me if you will finish your book in summer and when exactly you will do it.
Explanation: The sentence is requesting information about future actions ("you will finish your book in summer" and "when exactly you will do it"). When we ask for information about future events, we use the future simple tense (will + base form of the verb) to indicate the future actions.

10. People standing at the bus stop wonder if it will stop raining soon.
Explanation: The sentence is expressing the subject's wonder about a future event ("it will stop raining soon"). When we wonder about future events, we use the future simple tense (will + base form of the verb) to indicate the future action. In this case, "it will stop raining" is the future action.

11. Nobody knows if he will keep his promise.
Explanation: The sentence is stating that nobody has knowledge about a future event ("he will keep his promise"). When we talk about lack of knowledge regarding future events, we use the future simple tense (will + base form of the verb). In this case, "he will keep" is the future action.

12. I wonder if he will be late again.
Explanation: The sentence is expressing a wonder about a future event ("he will be late again"). When we wonder about future events, we use the future simple tense (will + base form of the verb) to indicate the future action. In this case, "he will be late" is the future action.

13. My dressmaker has no idea when my wedding dress will be ready.
Explanation: The sentence is expressing the dressmaker's lack of knowledge about a future event ("my wedding dress will be ready"). When we talk about lack of knowledge regarding future events, we use the future simple tense (will + base form of the verb). In this case, "my wedding dress will be ready" is the future action.

14. 'Why are you measuring the cooker?' - I'd like to see if it will fit in my new kitchen.
Explanation: The sentence is expressing the speaker's desire to know about a future event ("it will fit in my new kitchen"). When we talk about desires or wants regarding future events, we use the future simple tense (will + base form of the verb). In this case, "it will fit" is the future action.

15. Tell me the exact time when they will come.
Explanation: The sentence is requesting information about a future action ("they will come"). When we ask for information about future events, we use the future simple tense (will + base form of the verb) to indicate the future action.

B. 1. Wear your overcoats in case the weather turns colder. I wonder if it will snow as well.
Explanation: The sentence is expressing a possibility or contingency about future events ("the weather turns colder" and "it will snow"). When we talk about possibilities or contingencies, we use the future simple tense (will + base form of the verb). In this case, "the weather turns colder" and "it will snow" are the possible future actions.

2. My friend will feel much better if she loses some weight. I am not sure, though, if she will make an effort to eat fewer potatoes.
Explanation: The sentence is stating a condition and its result regarding future events ("she loses some weight" and "she will make an effort to eat fewer potatoes"). When we talk about conditional statements regarding future events, we use the future simple tense in the result part (will + base form of the verb) and the simple present tense in the condition part. In this case, "she loses" is the condition and "she will make" is the result.

3. Marina will ask if she gets the job as soon as she learns the language.
Explanation: The sentence is stating a condition and its result regarding future events ("she gets the job" and "she learns the language"). When we talk about conditional statements regarding future events, we use the future simple tense in the result part (will + base form of the verb) and the simple present tense in the condition part. In this case, "she gets" is the condition and "she will ask" is the result.

4. We don't know yet if we will get our visas, but as soon as they are given, we will see London.
Explanation: The sentence is expressing uncertainty about a future event ("we will get our visas"). When we are uncertain about something in the future, we often use the future simple tense (will + base form of the verb) to indicate uncertainty. In this case, "we will get" is the uncertain action.

5. I will take all the files with me in case my boss needs them. But God knows when he will remember about them!
Explanation: The sentence is expressing a possibility or contingency about future events ("my boss needs them" and "he will remember about them"). When we talk about possibilities or contingencies, we use the future simple tense (will + base form of the verb). In this case, "my boss needs" and "he will remember" are the possible future actions.

6. You will feel great relief when the temperature falls. But it's difficult to say when it will go down.
Explanation: The sentence is stating a cause and its effect regarding future events ("the temperature falls" and "you will feel great relief"). When we talk about cause and effect relationships regarding future events, we use the future simple tense in the effect part (will + base form of the verb) and the simple present tense in the cause part. In this case, "the temperature falls" is the cause and "you will feel" is the effect.

7. I wonder if the plane will come on time if the weather changes for the worse.
Explanation: The sentence is expressing a wonder about a future event ("the plane will come on time"). When we wonder about future events, we use the future simple tense (will + base form of the verb) to indicate the future action. In this case, "the plane will come" is the future action.

C. 1. I will go and see Venice as soon as I reach Italy.
Explanation: The sentence is stating a future action ("I will go and see Venice") that will happen after another future event ("I reach Italy"). When we talk about one future action happening after another, we use the future simple tense (will + base form of the verb) in both parts. In this case, "I will go and see" and "I reach" are the future actions.

2. If the sun is red, it is a sign that we will have a fine day tomorrow.
Explanation: The sentence is stating a conditional relationship between a present situation ("If the sun is red") and a future result ("we will have a fine day tomorrow"). When we talk about conditional statements regarding future events, we use the future simple tense in the result part (will + base form of the verb) and the simple present tense in the condition part. In this case, "is red" is the condition and "we will have" is the result.

3. If you are not at home by six, I will eat without you.
Explanation: The sentence is stating a conditional relationship between a present situation ("If you are not at home by six") and a future result ("I will eat without you"). When we talk about conditional statements regarding future events, we use the future simple tense in the result part (will + base form of the verb) and the simple present tense in the condition part. In this case, "are not" is the condition and "I will eat" is the result.

4. If Mother doesn't go to the market early, she won't get fresh fish.
Explanation: The sentence is stating a conditional relationship between a present situation ("If Mother doesn't go to the market early") and a future result ("she won't get fresh fish"). When we talk about conditional statements regarding future events, we use the future simple tense in the result part (will + base form of the verb) and the simple present tense in the condition part. In this case, "doesn't go" is the condition and "she won't get" is the result.

5. If Adam sells his car, he will be able to afford a holiday in Florida.
Explanation: The sentence is stating a conditional relationship between a present situation ("If Adam sells his car") and a future result ("he will be able to afford a holiday in Florida"). When we talk about conditional statements regarding future events, we use the future simple tense in the result part (will + base form of the verb) and the simple present tense in the condition part. In this case, "sells" is the condition and "he will be able" is the result.

6. Take some coins in case you need to phone.
Explanation: The sentence is expressing a possibility or contingency about a future event ("you need to phone"). When we talk about possibilities or contingencies, we use the future simple tense (will + base form of the verb). In this case, "you need" is the possible future action.

7. If nothing goes wrong, they will deliver the furniture today.
Explanation: The sentence is stating a conditional relationship between a present situation ("If nothing goes wrong") and a future result ("they will deliver the furniture today"). When we talk about conditional statements regarding future events, we use the future simple tense in the result part (will + base form of the verb) and the simple present tense in the condition part. In this case, "goes wrong" is the condition and "they will deliver" is the result.

8. Unless you change your mind, we won't be able to help you.
Explanation: The sentence is stating a conditional relationship between a present situation ("Unless you change your mind") and a future result ("we won't be able to help you"). When we talk about conditional statements regarding future events, we use the future simple tense in the result part (will + base form of the verb) and the simple present tense in the condition part. In this case, "change" is the condition and "we won't be able" is the result.

9. I will take an umbrella in case it rains.
Explanation: The sentence is expressing a possibility or contingency about a future event ("it rains"). When we talk about possibilities or contingencies, we use the future simple tense (will + base form of the verb). In this case, "it rains" is the possible future action.

10. If your son doesn't wear sensible shoes on those hikes, he will get blisters.
Explanation: The sentence is stating a conditional relationship between a present situation ("If your son doesn't wear sensible shoes on those hikes") and a future result ("he will get blisters"). When we talk about conditional statements regarding future events, we use the future simple tense in the result part (will + base form of the verb) and the simple present tense in the condition part. In this case, "doesn't wear" is the condition and "he will get" is the result.

11. If Martin doesn't win, it will be the end of his sport career.
Explanation: The sentence is stating a conditional relationship between a present situation ("If Martin doesn't win") and a future result ("it will be the end of his sport career"). When we talk about conditional statements regarding future events, we use the future simple tense in the result part (will + base form of the verb) and the simple present tense in the condition part. In this case, "doesn't win" is the condition and "it will be" is the result.

12. I will be happy if my dream comes true.
Explanation: The sentence is stating a future action ("I will be happy") that will happen after another future event ("my dream comes true"). When we talk about one future action happening after another, we use the future simple tense (will + base form of the verb) in both parts. In this case, "I will be" and "my dream comes" are the future actions.

13. If the situation gets worse, I will lose my job.
Explanation: The sentence is stating a conditional relationship between a present