viết lại câu, chia động từ trong ngoặc ở dạng thích hợp 1. I (study) medice for/ since two year 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 work for/since you came home 10. I (not see)her for/since several years and then I met her again