Помогите, пожалуйста, кто-нибудь толковый, я вообще не разбираюсь, спасибо!
Раскройте скобки, напишите правильную форму глагола, используя правило согласования времен:

1. She went for a walk in the park when the weather (be)good.

2. She has been teaching since she (graduate) from college.

3. I went to bed early because I (be) very tired.

4. He didn't answer your questions because he (not to speak) English.

5. While I (to watch) TV, the telephone rang.

6. By the time he returned, I (to type) ten pages of my report.

7. The books that I (to buy) yesterday are on my desk.

8. Yesterday the patient felt better than he (to feel) last week.