Exercise 1: Chia động từ trong ngoặc về thì quá khứ đơn hoặc hiện tại hoàn thành
Yêu cầu làm bài:
- Gạch chân dấu hiệu nhận biết à xác định thì QUÁ KHỨ ĐƠN/ HIỆN TẠI HOÀN
THÀNH
- Chia động từ trong ngoặc

1. John (read) ____________ the letter from Mary already.
2. We (not/ begin) ____________ to learn for the test yet.
3. I (meet) ____________ Robert at the supermarket this morning.
4. Nancy (be) ____________ to Vietnam several times.
5. I (not/ see) ____________ your brother yet.
6. My pen isn’t here anymore. Someone (take) ____________ it already.
7. The motorbike looks clean, (you/ wash) ____________ it?
8. We (not/ be) ____________ friends many years ago.
6. Anyone (phone) yet?
7. Three people (visit) him in hospital last Friday.
8. How many games your team (win) so far this season?
9. She (go) to Japan but now she (not/ come) back.
10. They (visit) a farm two weeks ago.