Mình ghi mỗi từ để trả lời hoy nha :D

14. Going

15. To

16. Finish

17. So

18. To finish the work today/ to

19. An

20. Visit

21. Good 
22. Enough

23. Since.

24. Do

25. Did

=>
14. I am not used to sleeping in the afternoon. ( be used to Ving : quen làm gì)
15. It was foolish of him to say that. (foolish of : ngu ngốc)
16. Amanda family succeeded in getting a good job. (managed to V = succeeded in Ving)
17. The beach was so dirty that we decided not to stay. 
The beach was too dirty for us to decide to stay (for us to stay).
(so adj that = such a/an adj that = too adj for sb to V)
18. You don't need to/don't have to finish the work today. (don't need to = don't have to : không phải, không cần thiết)
19. What an excellent meal! (what a/an adj N!)
20. I'd rather not visit the museum. (would rather (not) V)
21. Rober can't cook as well as Jane (can/does). ( so sánh bằng as adj/adv as)
22. Mark is not old enough to see the horror film. (be adj enough to V)
23. I haven't played football since 1971. (since + mốc thời gian)
24. I'd rather not have lunch yet.
25. When did they buy the house?