Chia động từ thì hiện tại hoàn thành

Chia động từ thì hiện tại hoàn thành

1. I have not worked today.

2. We (buy)..............a new lamp.

3. We (not/ plan)..............our holiday yet.

4. Where (be/ you)?

5. He (write)..............five letters.

6. She (not/ see)..............him for a long time.

7. (be/ you)..............at school?

8. School (not/ start)..............yet.

9. (speak/ he)..............to his boss?

10. No, he (have/ not)..............the time yet