Hãy khoanh từ không đúng và sửa lại

Hãy khoanh từ không đúng và sửa lại

1. He has left / for HCM City with his friend / for last week 
2. She was studying medicine while I last / saw her
3. Although the traffic was heavy he went / to his office late
4. I hope that she would have a good time / next Sunday
5. If he wants to attend that course he had to study / very hard 
6. She asked them if they / will spend / their holidays at the seaside
7. I wish today were sunny so that we can spend the day in the country
8. If I knew he was / at home yesterday I would have visited him
9. Sam used to / live / in the country when he is a boy
10. When I first / met him he is working / in a bank