A.
1. D. burned
2. A. though
3. B. carry
4. D. flood
B.
1.D. not to stay
2.A. speaking
3.C. delighted
4. C. Would you like
5. B. in
6. C. she is
7. D. hard
8. A. was eating
9. B. came
10.B. traveling
11.A. came
12. B. were watching
13.C. fire-making
14. B. coming
15. B. to play
16. D. are sent
C. a.
1/ When he came, I was listening to music.
2/ Tam ( already know ) has already known my mother .
3/ The house was built over fifty years ago .
4/ He said that he was a plumber.
b.
1/ → Ba said that he was a student then .
2/ → Mary asked Phuong if Ha Long Bay was in the Northern Viet Nam