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 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

1 good

2 burn

3 temperature

4 toothache

5 pain

6 cough

7 stomachache

8 hurt

9 headache

10 sickness

11 appointment

12 medical

13 unpleasant

14 allergic

15 carefully

16 sneezing

17 depression

18 concentration

19 sunburned

20 tiredness

1 service

2 Disabled

3 đúng

4 đúng

5 non-profit

6 voluntary

7 charitable 

8 đúng

9 certain

10 đúng

11 non-profit

12 to attend

13 flooded

14 easily

15 regularly

16 advice

17 Homeless

18 disabled

19 natural

20 organization

1 services

2 disabled

3 organisation

4 donation

5 non-profit

6 voluntary

7 charitable

8 elderly

9 certain

10 difference

11 non-profit

12 to attend

13 flooded

14 uneasy

15 regularly

16 advice

17 homelessness

18 disabled

19 natural

20 organisation

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

16C -> is living

17C -> has closed

18B -> like

19B -> burned

20c -> fool

16.c

17.c

18.b

19.c

20.c

1 C => is living

2 C => closed

3 B => like

4 B => out

5 C => fool

1 A => why did you

2 A => did

3 D => not to

4 D => had

4 C => before