III

5. B => working 

6. D => seen them.

7. B => hard.

IV
8. A

9. D

10. D

11. C

12. His bad exam results made his parents________.
A. disappointment  B. disappointed
C. disappoint  D. disappointing

13. "Don't forget to take________your shoes when you are in a Japanese house."
A. off B. apart C. in D. up
14. The police ordered people to leave the building________a bomb threat.
A. in case B. because C. since D. because of
15. You should know________a thick good book quickly.
A. to read  B. reading
C. how to read  D. the way for reading

#NOCOPY 

5. B -> working

6. D -> seen them

7. D -> their old ages

8. A ( cấu trúc if )

9. A ( câu hỏi đuôi phủ định lại V trừ noone,...)

10. D ( cấu trúc provide : provide someone with something)

11. C ( bị động)

12. B ( disappointed vì đây là họ buồn vì một thứ gì gây ra => ed)

13. A ( take off : cởi ra)

14. A ( in case : trong trường hợp, đúng nghĩa nhất )

15. C ( how to V : cách để ... )

Chúc bạn học tốt !