1) I was tired because I (type) for a long time.

2) Her boss was very angry with her because she (come) to work very late.

3) I didn't know about the earthquake because I (not /watch) television.

4) She was too fat because she (not / keep) her doctor's advice.

5) I took my car to the garage because the brakes (not / work).

6) She had to go to the dentist because she (not / clean) her teeth.

7) He got bad marks because he (not / study) hard.

8) She wasn't at home. She (go) out with her friends.

9) I thought I (behave) like an idiot.

10) He (study) English) very hard for the last few days.