Помогите, дам 50 баллов!!!

2. became
3. arrive
4. was not
5. has disappeared
6. knew
7. could
8. be
9. looked
10. came
11. had
12. raised
13. replied
14. thank
15. are doing
16. have never had
17. doubt
18. saw
19. read
20. met

4 not be 5 disappear 6 know 7 can 8 was 9 look 10 came 11 have 12 raise 13 reply 14 thank 15 was 16 never have 17 doubt 18 saw read