Bài 1:

2. was not blowing

3. was looking

4.  were not working

5. were enjoying

6. was watching

7. was not recovering

8. were traveling

9. was driving

10. was not sleeping

=>
A/
2. wasn't shining
3. wasn't blowing
4. weren't working
5. were enjoying
6. was watching
7. wasn't recovering
8. were travelling
9. was driving
10. wasn't sleeping
B/
1. were travelling/kept (while + QKTD)
2. was driving/saw (QKTD when QKĐ)
3. was flying/saw (while QKTD)
4. was fighting/heard
5. died/was running
6. were having/went
7. was thinking/were talking
8. saw/was looking 
9. was talking/were looking