1 C => is living

2 C => closed

3 B => like

4 B => out

5 C => fool

1 A => global

2 C => to

3 C => or

4 D => support

5 D => in

1. is -> was

2. depressing -> depressed

3. has gone -> had gone

4. was opening -> opened 

5. attending -> to attend

6. tomorrow -> the next day

7. two - days -> two - day

8. do i want -> i wanted

9. câu này hình như thiếu đề ạ

10. will we -> shall we

35 A => on the flip side

36 A => in

37 C => have been derived 

38 D => tremediously

39 B => becomes 

40 D => of which

41 C => minority languages

42 C => lie under 

43 B => happens 

44 B => percent

45 C => have been born

46 B=> of whom

47 C => as well as 

48 A bỏ đi

49 C => ethnicity

50 C => sacrificing

1 B => amazed

2 C => to enter

3 B => interesting

4 A => sad

5 D=> slow

6 B => that

7 D => study

8 C => don't have to

1. C => a

2. B => was taking

3. A => with

4. D => he