Bài 4. 

1. I caught the bus to work yesterday.

2. She didn'y go for a walk because it was raining.

3. My brother was watching TV when I got home.

4. How did you break your arm?

5. Last summer, we spent in a beautiful village.

6. What was Sally wearing at the party last night.

7. My neighbors were having a loud party while I was trying to study.

8. Did you go to the cinema last night?

--------------------------------------------

1. was waiting

2. wasn't working

3. was waiting

4. had

5. was driving

6. were you doing

7. didn't call

8. was still sleeping

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1. stopped 

2. was reading

3. were passing

4. had

5. was getting

6. Was...thinking

7. did...swim

8. was attracted 

9. was working

10. was created

Bài 4:

1. I caught the bus to work yesterday.

2. She didn'y go for a walk because it was raining.

3. My brother was watching tv when I got home.

4. How did you break your arm?

5. Last summer, we spent in a beautiful village.

6. What was sally wearing at the party last night.

7. My neighbors were having a loud party while I was trying to study.

8. Did you go to the cinema last night?

Bài 5:

1. was waiting

2. wasn't working

3. was waiting

4. had

5. was driving

6. were you doing

7. didn't call

8. was still sleeping

Bài 6:

1. stopped 

2. was reading

3. were passing

4. had

5. was getting

6. Was Kate already thinking

7. Did you swim

8. was attracted 

9. was working

10. was created