1) I (look) for my keys since we came home. Where are they?!
looking have looked been
2) She (make) puddings all day.
has making have been
3) What (you / do)? You are so dirty!
been have you doing
4) John (not / do) his maths homework for a long time.
not has been doing
5) We (repair) cars since 2 pm and we haven't finished yet.
repaired have repairing been
6) How long (he / teach)?
he been teaching has
7) I (not / write) letters since my brothers came home.
haven't writing written been
8) - Why are you crying? - I (watch) a sad film.
9) She (pick) strawberries since 10 am.
10) How long (you / play) volleyball?
11) Tom (not / run) long and he isn't tired yet.
12) I (clean) windows since lunch time. It's so exhausting.

Господи Иисусе английский ✝️✝️✝️

1) I have been looking for my keys since we came home. Where are they?!

Explanation: The correct answer is "have been looking" because it indicates an action that started in the past and is still continuing in the present. The use of "have" and "been" is necessary to convey this continuous action.

Step-by-step solution:
- The base form of the verb "look" is "look".
- Add the auxiliary verb "have" in the present perfect tense. This gives us "have looked".
- To indicate the continuous action, add the present participle form of the verb "look", which is "looking".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "have been looking".

2) She has been making puddings all day.

Explanation: The correct answer is "has been making" because it indicates an action that started in the past and is still continuing in the present. The use of "has" and "been" is necessary to convey this continuous action.

Step-by-step solution:
- The base form of the verb "make" is "make".
- Add the auxiliary verb "has" in the present perfect tense. This gives us "has made".
- To indicate the continuous action, add the present participle form of the verb "make", which is "making".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "has been making".

3) What have you been doing? You are so dirty!

Explanation: The correct answer is "have you been doing" because it indicates an action that started in the past and is still continuing in the present. The use of "have" and "been" is necessary to convey this continuous action. In questions, the auxiliary verb is placed before the subject pronoun.

Step-by-step solution:
- The base form of the verb "do" is "do".
- Add the auxiliary verb "have" in the present perfect tense. This gives us "have done".
- To indicate the continuous action, add the present participle form of the verb "do", which is "doing".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "have been doing".

4) John hasn't been doing his maths homework for a long time.

Explanation: The correct answer is "hasn't been doing" because it indicates an action that started in the past and is still continuing in the present. The use of "hasn't" (contraction of "has not") and "been" is necessary to convey this continuous action. In negative sentences, "not" is inserted between the auxiliary verb and the main verb.

Step-by-step solution:
- The base form of the verb "do" is "do".
- Add the auxiliary verb "has" in the present perfect tense. This gives us "has done".
- To indicate the continuous action, add the present participle form of the verb "do", which is "doing".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "has been doing".
- To form the negative sentence, insert "not" between "has" and "been", giving us "hasn't been doing".

5) We have been repairing cars since 2 pm and we haven't finished yet.

Explanation: The correct answer is "have been repairing" because it indicates an action that started in the past and is still continuing in the present. The use of "have" and "been" is necessary to convey this continuous action.

Step-by-step solution:
- The base form of the verb "repair" is "repair".
- Add the auxiliary verb "have" in the present perfect tense. This gives us "have repaired".
- To indicate the continuous action, add the present participle form of the verb "repair", which is "repairing".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "have been repairing".

6) How long has he been teaching?

Explanation: The correct answer is "has he been teaching" because it indicates an action that started in the past and is still continuing in the present. The use of "has" and "been" is necessary to convey this continuous action. In questions, the auxiliary verb is placed before the subject pronoun.

Step-by-step solution:
- The base form of the verb "teach" is "teach".
- Add the auxiliary verb "has" in the present perfect tense. This gives us "has taught".
- To indicate the continuous action, add the present participle form of the verb "teach", which is "teaching".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "has been teaching".

7) I haven't been writing letters since my brothers came home.

Explanation: The correct answer is "haven't been writing" because it indicates an action that started in the past and is still continuing in the present. The use of "haven't" (contraction of "have not") and "been" is necessary to convey this continuous action. In negative sentences, "not" is inserted between the auxiliary verb and the main verb.

Step-by-step solution:
- The base form of the verb "write" is "write".
- Add the auxiliary verb "have" in the present perfect tense. This gives us "have written".
- To indicate the continuous action, add the present participle form of the verb "write", which is "writing".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "have been writing".
- To form the negative sentence, insert "not" between "have" and "been", giving us "haven't been writing".

8) - Why are you crying? - I have been watching a sad film.

Explanation: The correct answer is "have been watching" because it indicates an action that started in the past and is still continuing in the present. The use of "have" and "been" is necessary to convey this continuous action.

Step-by-step solution:
- The base form of the verb "watch" is "watch".
- Add the auxiliary verb "have" in the present perfect tense. This gives us "have watched".
- To indicate the continuous action, add the present participle form of the verb "watch", which is "watching".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "have been watching".

9) She has been picking strawberries since 10 am.

Explanation: The correct answer is "has been picking" because it indicates an action that started in the past and is still continuing in the present. The use of "has" and "been" is necessary to convey this continuous action.

Step-by-step solution:
- The base form of the verb "pick" is "pick".
- Add the auxiliary verb "has" in the present perfect tense. This gives us "has picked".
- To indicate the continuous action, add the present participle form of the verb "pick", which is "picking".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "has been picking".

10) How long have you been playing volleyball?

Explanation: The correct answer is "have you been playing" because it indicates an action that started in the past and is still continuing in the present. The use of "have" and "been" is necessary to convey this continuous action. In questions, the auxiliary verb is placed before the subject pronoun.

Step-by-step solution:
- The base form of the verb "play" is "play".
- Add the auxiliary verb "have" in the present perfect tense. This gives us "have played".
- To indicate the continuous action, add the present participle form of the verb "play", which is "playing".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "have been playing".

11) Tom hasn't been running long and he isn't tired yet.

Explanation: The correct answer is "hasn't been running" because it indicates an action that started in the past and is still continuing in the present. The use of "hasn't" (contraction of "has not") and "been" is necessary to convey this continuous action. In negative sentences, "not" is inserted between the auxiliary verb and the main verb.

Step-by-step solution:
- The base form of the verb "run" is "run".
- Add the auxiliary verb "has" in the present perfect tense. This gives us "has run".
- To indicate the continuous action, add the present participle form of the verb "run", which is "running".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "has been running".
- To form the negative sentence, insert "not" between "has" and "been", giving us "hasn't been running".

12) I have been cleaning windows since lunch time. It's so exhausting.

Explanation: The correct answer is "have been cleaning" because it indicates an action that started in the past and is still continuing in the present. The use of "have" and "been" is necessary to convey this continuous action.

Step-by-step solution:
- The base form of the verb "clean" is "clean".
- Add the auxiliary verb "have" in the present perfect tense. This gives us "have cleaned".
- To indicate the continuous action, add the present participle form of the verb "clean", which is "cleaning".
- As the action has been ongoing since the past and is still happening in the present, add the auxiliary verb "been". This gives us "have been cleaning".