1.We had our car serviced and it seems there’s a problem with the engine

2. Scientists are trying to work out ways to reduce pollution from aircraft

3. All of us knew that the way to the success was not easy

4. Nick told that he went camping with his classmates the next day

1 C => as

2 D => was

3 B => more comfortable 

4 A => lived

đề đâu e

D. sunny and windy

I

1C

2 D

3 D

4C

5 C

II

1 C

2 A

3 D

4 C

5 D

6 D

7 B

8 B

9 D

10 A

11 C

12 A

13 A

14 C

15 D

16 C

17 D

III, 

WRITING-I

1.will be used in the future.

2. she lives far from school, she always go to school early.

3.been playing chess for 5 years.

4.of his sickness, he goes to school.