Bài 1:

1. was walking

2. were having

3. was sitting

4. was talking

5. were driving

6. was riding

7. was raining

8. were singing

9. was walking

10. was going

11. was walking

12. was attending

13. was standing

14. was studying/ were having

15. were dancing

Bài 2:

1. Were they taking the exam?

2. When were he working there?

3. Were you making dinner?

4. Were they drinking coffee when you arrived?

5. When were we sleeping?

6. Were they studying last night?

7. We were talking when the accident happened.

8. He wasn't exercising enough.

9. Was I talking too much?

10. It wasn't snowing.

11. How were they feeling?

12. They weren't talking.

13. Where was I staying?

14. Why was he studying on a Saturday night?

15. I was going to school when you saw me.

16. You were sleeping at 6 am.

17. She was working when I called.

18. We weren't leaving when you called.

19. I wasn't staying in a hotel.

20. Were we making too much noise?

2.1. Bài tập thì Quá khứ tiếp diễn cơ bản
Bài 1: Chia động từ ở trong ngoặc ở thì quá khứ tiếp diễn để hoàn thành câu
1. I lost my keys when I ___was walking_____ (walk) home. 
2. It was raining while we _____were having___ (have) dinner.
3. I saw the department stores when I ____was sitting____ (sit) on the bus.
4. Her phone rang while she ____was talking____ (talk) to her new boss. 
5. My friends _____was driving___ (drive) to work when they heard the news on the radio. 
6. He ___is riding_____ (ride) his bicycle when the cat ran across the road. 
7. We couldn’t go to the beach yesterday because it ___was raining_____. (rain) 
8. It was a lovely day. The sun was shining and the birds ___were singing_____ (sing) in the trees. 
9. The tourist lost his camera while he  __was walking___ (walk) around the city.
10. The lorry  ___was going__  (go) very fast when it hit our car.
11. I ____was walking___ (walk) down the street when it began to rain.
12. At this time last year, I ___was attending____ (attend) an English course.
13. Jim _____was standing___ (stand) under the tree when he heard an explosion.
14. While I __was studying___ (study) in my room, my roommates ____were having____ (have) a party in the other room.
15. Mary and I _____were dancing____  (dance) the house when the telephone rang.
Bài 2: Viết thành câu hoàn chỉnh ở thì quá khứ tiếp diễn dựa trên từ gợi ý
1. Were they taking the exam?
2. (when was he working there?) 
3. (Were you making dinner?) 
4. (Were they drinking coffee when you arrived?) 
5. (when were we sleeping ?) 
6. (Were they studying last night) 
7. (Were we talking when the accident happened) 
8. (Wasn't he exercising enough) 
9. (Was I talking too much?) 
10. (Wasn't it snowing) 
11. (how were they feeling?) 
12. (Weren't they talking) 
13. (where was I staying?) 
14. (why was he studying on a Saturday night?) 
15. (I was going to school when you saw me) 
16. (you were sleeping at 6am)
17. ( she was working when I called) 
17. (we was not leaving when you called) 
18. (I was not staying in a hotel) 
19. (Were we making too much noise?)