3. Complete the sentences with the correct prepositions: for, after, forward to, up 1.When my parents are busy, I usually look my little sister.
2.My friends and I are really looking our summer camp!
3.If you don’t know the word, you should look it in the dictionary.
4.– What are you doing? – I’m looking my keys.
5.I’m really looking seeing new Spielberg’s film.

4. Write the correct form of the verbs in brackets.
1.If you go to the party, I’m sure you (have) a good time.
2.If you ( not study) , you may fail the exam.
3.If we buy a car, we ( not have to) travel by bus.
4.If you (not sleep) enough, you get tired.
5.When it ( rain), I take my umbrella.
6.If you (cook) dinner, I’ll wash the dishes
7.When you (run) fast, you get hot.

1. When my parents are busy, I usually look after my little sister.

Explanation: The correct preposition to use in this sentence is "after," which means to take care of or be responsible for someone or something. In this case, the speaker is taking care of their little sister while their parents are busy.

2. My friends and I are really looking forward to our summer camp!

Explanation: The correct preposition to use in this sentence is "forward to," which means to feel excited or eager about something that is going to happen in the future. In this case, the speaker and their friends are excited about their upcoming summer camp.

3. If you don't know the word, you should look it up in the dictionary.

Explanation: The correct preposition to use in this sentence is "up" when talking about looking for information in a reference source such as a dictionary. In this case, the speaker is advising someone to search for the meaning of an unknown word in a dictionary.

4. - What are you doing? - I'm looking for my keys.

Explanation: The correct preposition to use in this sentence is "for," which means searching for or trying to find something. In this case, the speaker is searching for their keys.

5. I'm really looking forward to seeing new Spielberg's film.

Explanation: The correct preposition to use in this sentence is "forward to," which means feeling excited or eager about something that is going to happen in the future. In this case, the speaker is excited about watching a new film directed by Spielberg.

Now let's move on to the second part of the question:

4. Write the correct form of the verbs in brackets.

1. If you go to the party, I'm sure you will have a good time.

Explanation: The correct form of the verb "to have" in this sentence is "will have" to indicate future possibility. In this case, the speaker is expressing their belief that the person will enjoy themselves at the party if they go.

2. If you do not study, you may fail the exam.

Explanation: The correct form of the verb "to study" in this sentence is "do not study" to indicate a negative action. In this case, the speaker is warning that if someone does not study, they might fail the exam.

3. If we buy a car, we will not have to travel by bus.

Explanation: The correct form of the verb "to have" in this sentence is "will not have" to indicate future possibility. In this case, the speaker is stating that if they buy a car, they will no longer need to travel by bus.

4. If you do not sleep enough, you get tired.

Explanation: The correct form of the verb "to sleep" in this sentence is "do not sleep" to indicate a negative action. In this case, the speaker is stating that if someone does not get enough sleep, they will become tired.

5. When it rains, I take my umbrella.

Explanation: The verb "to rain" does not require a change in form in this sentence. In this case, the speaker is stating that whenever it rains, they take their umbrella.

6. If you cook dinner, I'll wash the dishes.

Explanation: The correct form of the verb "to cook" in this sentence is "cook" to indicate a future action. In this case, the speaker is suggesting that if the person cooks dinner, they will wash the dishes.

7. When you run fast, you get hot.

Explanation: The verb "to run" does not require a change in form in this sentence. In this case, the speaker is stating that when someone runs fast, they become hot.