Ex1: sử dụng hình thức quá khứ của động từ để chia từ trong ngoặc
1. The windows (be).............were.....open last monday.
2. (Be).....were.......... you a teacher two years ago?yes, i (be)..........was.....
3.Where (be)....was.......... Nam from yesterday?
4. Why (be)........was............he unhappy last tuesday?
5. I (remember).......remembered................ your trip to Nha Trang two years ago.
6.Didn't They ( not come).......come............ school yesterday?
7. didn't The windows (not close).....close..............yesterday?
8.We (not return)........didn't return......... at home at 7 pm last Monday.
9. She (not eat)..........didn't eat........... fish and crab yesterday.
10. Lan (not go)........didn't go......Ho Chi Minh city to years ago.
11. My parents (not take)....didn't take......... to Vung Tau last week.
12. We (not have)......didn't have........... a lot of friends in Ha Noi