1. I was listening to the radio while Mary was cooking dinner(два действия, которые происходили в один момент, ключевое слово while).
2. Did you bought this book yesterday? (действие произошло вчера, есть время,ключевое слово yesterday).
3. Last Friday Jill went home early because she wanted to see a film. (есть упор на время - last Friday).
4. When does your brother usually get home in the evening? (регулярное действие, ключевое слово usually)
5. Jane always brings us a nice present. (always - Present Simple).
6. What are those people doing in the middle of the road? (действие, которое происходит в данный момент).
7. Have you read this book? (действие, которое началось в и длится до сих пор или имеет какое-то отношение к сегодняшнему дню)
8. While Fred was sleeping , Judy was watching TV. (два действия)
9. When I was young, I thought Mary was nice — but now I think she’s fantastic. (когда я был молод т.е. Past simple, but now- но теперь, т.е. Present simple)
10. Jill was walking home when she saw her husband’s car outside the cinema. (действие, которое прервало другое: она шла домой, когда увидела..)
11. Look there! Sue and Tim are running to school. (ключевое слово : Look! - Смотри!, действие происходит на данный момент)
12. Jack’s father doesn't work in London — he doesn't speak English. (отец не работает в Лондоне-он не разговаривает на английском, это то, что происходит вообще, это факт, если отец не разговаривает на английском, значит он не работает в Лондоне).
13. Joe bought a car yesterday.(действие произошло вчера)
14. Their father often goes to rock concerts. (often - часто, т.е. Present Simple)
15. While you were sleeping, mother arrived. (одно действие прервало другое: когда я спала, моя мама пришла).
Надеюсь
1. I was listening to the radio while Mary was cooking dinner
2. Did you buy this book yesterday?
3. Last Friday Jill went home early because she wanted to see a film
4. When does you brother usually get home in the evening?
5. Jane always brings us a nice present
6. What are those people doing in the middle of the road?
7. Did you read this book?
8. While Fred was sleeping , Judy was watching Tv
9. When I was young I thought Mary was nice - but now I think she’s fantastic
10. Jill was walking home when she saw her husbands car outside the cinema
11. Look there! Sue and Tim are running to school
12. Jacks father isnt working in London - he doesn’t speak English
13. Joe bought a car yesterday
14. Their father often went to rock concerts
15. While you were sleeping mother arrived
2 could
3 can
4 can
5 can
6 could
7 can
8 can
9 could