Chia từ trong ngoặc, sử dụng thì hiện tại hoàn thành:
1. Where (be / you) ?
2. (speak / he)…………..to his boss?
3. No, he (have / not)…………..the time yet.
4. He (write)…………..five letters.
5. She (not / see)…………..him for a long time.
6. (be / you)…………..at school?
7. I have not worked today.
8. We (buy)…………..a new lamp.
9. We (not / plan)…………..our holiday yet.
10.School (not / start)…………..yet.