Нужна помощь с английским

И желательно обьяснить где и какое время, и почему, пожалуйста

Put the following sentences into the correct tense: Present Simple, Past Simple, Present Continuous, Past Continuous or Present Perfect.

1. I ________ (listen) to the radio while Mary __________ (cook) dinner.

2. You __________ (buy) this book yesterday?

3. Last Friday Jill __________ (go) home early because she __________ (want) to see a film.

4. When your brother usually __________ (get) home in the evening?

5. Jane always __________ (bring) us a nice present.

6. What those people __________ (do) in the middle of the road?

7. You __________ (read) this book?

8. While Fred __________ (sleep), Judy __________ (watch) TV.

9. When I __________ (be) young, I __________ (think) Mary __________ (be) nice — but now I __________ (think) she’s fantastic.

10. Jill __________ (walk) home when she __________ (see) her husband’s car outside the cinema.

11. Look there! Sue and Tim __________ (run) to school.

12. Jack’s father __________ (not work) in London — he __________ (not speak) English.

13. Joe __________ (buy) a car yesterday.

14. Their father often __________ (go) to rock concerts.

15. While you __________ (sleep), mother __________ (arrive).