Помогите глаголы написать в нужном времени! 1. He (to solve) the cross-word puzzle for...

Question

Помогите глаголы написать в нужном времени!
1. He (to solve) the cross-word puzzle for half an hour and he (to say) he (to be) about to finish it as he (to think) over the last word. 2. The actors (to rehearse) since early morning; now they (to go over) the first scene as they (not to be) satisfied with their acting. 3. Here you (to be) at last! I (to wait) for you for twenty minutes. You (not to be) ashamed? 4. She (to speak) over the telephone long enough, it (to be) time for her to stop talking. 5. Since you (to keep) late hours this week you (to look) tired and worn out. 6. It (to snow) steadily the whole week and it still (to snow). If it (to go) on like this, nobody will be able to reach the camp. 7. At last you (to open) the door! I (to ring) for an hour at least, it (to seem) to me. 8. My watch (to keep) good time ever since the first repair. 9. They (to discuss) this question ever since I (to be) here and they (not to come) to any definite conclusion yet. 10. The typist (to miss) several words as she (to talk) all the time. 11. The lecturer (to mention) this name several times but I cannot remember it. I’ll write it down as soon as he (to mention) it again. 12. He (to work) at the language all the time and (to make) great progress. His phonetics (to be) perfect, only a slight accent (to remain).

Answer 1

1. He (had been solving) the cross-word puzzle for half an hour and he (said) he (was) about to finish it as he (was thinking) over the last word.
2. The actors (have been rehearsing) since early morning; now they (are going over) the first scene as they (are not) satisfied with their acting.
3. Here you (are) at last! I (have been waiting) for you for twenty minutes. Aren't you ashamed?
4. She (has been speaking) over the telephone long enough, it (is) time for her to stop talking.
5. Since you (have kept) late hours this week you (look) tired and worn out.
6. It (has been snowing) steadily the whole week and it is still (snowing). If it (goes) on like this, nobody will be able to reach the camp.
7. At last you (have opened) the door! I (have been ringing) for an hour at least, it (seems) to me.
8. My watch (has been keeping) good time ever since the first repair.
9. They (have been discussing) this question ever since I (was) here and they (have not come) to any definite conclusion yet.
10. The typist (has missed) several words as she (has been talking) all the time.
11. The lecturer (has mentioned) this name several times but I cannot remember it. I’ll write it down as soon as he (mentions) it again.
12. He (has been working) at the language all the time and (has  made) great progress. His phonetics (are) perfect, only a slight accent (remains).