1. D
2. B
3.C
4. A

Vậy 

1. meeting

2. to do

3. to give

4. meeting

5. drinking

6. smoking

7. playing

8. to explain

9. telling

10. to inform

11. smoking

12. to smoke

13. to send

14. to avoid/ being

15. to get / to ask

16. making/ speaking

17. to win/ cheating

18. climbing/ to explain/ to say/ to let/ go

19. writing/ to do/ to go/ see

20. to arrive/ rising

21. to park

22. smoking/ to risk/ setting/ smoke

23. writing/ to receive

24. to see/ to find/ buy

25. go fishing

26. being/ to wait/ to see

27. to eat/ trying

28. finding/ getting/ to know

29. nor knowing/ having/ to get

30. accompanied

31. convinced

32. being/ taking

33. carrying

34. sent

35. being killed

36. flying

37. considered/ to do/ told

 B. downward    - upward

2. dentist

3. painters

4. farner

6. doctor

7.  jourmalist

8. engineer

1 wash 

2 cleaned 

3 cashed

4 to go 

5 stay 

6 painted 

7 to write 

8 shortened 

9 redo 

10 filled 

1 A great deal of tea is drunk in England

3 Her dog is often taken for a walk by her

4 English is spoken all over the world

5 Their friends have been met at the railway station by a group of students

6 Tom wasn't allowed to take these books home

7 Exercises won't be corrected by the teacher tomorrow

8 How many trees were cut down to built that fence?

9  Many people are attracted by this well-known library

10 He likes being called "sir"

11 My bike can't be repaired by him

12 Tom has been operated by Mary since 10 o'clock

13 We have been taught French by Mr Smith for 2 years

14 The children weren't looked after properly 

\(\dfrac{1}{4,186}\) = calo

1. My taste in music is different from my brother's.

2. Mary never studied arts at school and her sister didn't, either.

3. I think Quang didn't act as well as Vinh in that play.

other