помогите решить оба задания

14)
1. Tiny didn't write songs for pop singers last year.
2. Billy wasn't  in Antarctica three days ago.
3. Jim didn't drink cold water yesterday.
4. Jill didn't play football an hour ago.
5. Tim and Tom weren't in the desert a week ago.
15)
1. did
2. did, was
3.did, did, were
4. were, was
5. could