Помогите решить оба задания

14)
1. Tiny didnt write songs for pop singers last year.
2. Billy wasnt  in Antarctica three days ago.
3. Jim didnt drink cold water yesterday.
4. Jill didnt play football an hour ago.
5. Tim and Tom werent in the desert a week ago.
15)
1. did
2. did, was
3.did, did, were
4. were, was
5. could