Bài 1:

1. They ( not see) haven't seen the film Titanic yet.

Yet ⇒ HTHT

2. We ( not begin) haven't begun to learn for the test yet.

Yet ⇒ HTHT

3. I ( meet) met Robert at the supermarket this morning.

⇒ Chỉ quá khứ

4. Nancy ( be) has been to Viet Nam several times.

⇒ several times → thì HTHT

5. I ( not see) haven't seen your brother yet.

⇒ Yet → thì HTHT

6. When ( your father/ give up) did your father give up smoking?

⇒ Câu hỏi thì QKĐ

7. My pen isn't here anymore. Someone ( take) has taken it already.

⇒ Already → HTHT

8. The motorbike looks clean, ( you/ wash) Did you wash it?

⇒ Câu hỏi thì QK

Bài 2:

1. We ( not do) didn't do any volunteer work five years ago.

⇒ ago → QKĐ

2. Minh ( do) did lots of volunteer work when he was in high school.

⇒ Câu QK

3. Has Vinh ever been ( Vinh/ ever/ be) to Hoi An?

- Yes, he has been ( be) to Hoi An once.

⇒ Ever → HTHT

4. What time does the first lesson begin ( begin)?

⇒ Câu QK

*Chucbanhoctot* Nhớ vote mik 5*,ctlhn