Пожалуйста помогите,срочно.Past Simple та Present Perfect.
1. From 1990 to 1995 Jack _____ (to work) as a bookkeeper.
2. I _____ (to study) English since 1995.
3. When she was an administrator, she _____ (to work) ten hours a day.
4. How many pages _____ you _____ (to read)?
5. Where _____ all the managers _____ (to go)?
6. Last summer Tom and Ann _____ (to travel) around the world together.
7. They _____ (to study) Russian at school.
8. He _____ (to go out) four hours ago and _____ (not to return).
9. I _____ (to be) very busy all this week.
10. She _____ (not to finish) her work yet and is not ready to go with us.
11. How much _____ he _____ (to get) at his last job?
12. I _____ (to go) home at 9 o’clock yesterday.