1. Did you watch...?
2. was doing
3. watched/had washed
4. works/had spent/learnt
5. went/were having
6. doesn't watch
7, went/had called
8, was ringing/was taking
9, does the next train leave?
10, rains/ is raining.
11. are living
12. have known
13. was reading/was learning/ is doing
14. haven't had
Học tốt!!!