Viết lại câu, chia động từ trong ngoặc ở dạng thích hợp

Bài 14: Viết lại câu,chia động từ trong ngoặc ở dạng thích hợp
1. I (study) medicine for/since two years but the I stopped
2. I (work) in the restaurant for/since six months but then it closed
3. I (live) here for/since I was a little girl
4. He (be) in the prison now for/since three years
5. She (work) for me for/since she left school
6. I (not see) him for/since he left the office
7. We (be) in Italy for/since 1960
8. I work here for/since seven years but it’s time to leave now
9. What’s the matter? You (not speak) a word for/since you came home
10. I (not see) her for/since several years and then I met her again