mỗi trường đề khác mà

5.c

6.b

7.b

8.a

9.d

10.a

11.d

12.c

13.F

1.were walking/saw

2.was helping/came

3.was working/called

4.was washing/began

4.blew/was landing

41.A

42.C

43.C

44.C

45.D

41.If we use the car all the time, we will make the air dirty.

42. is the shortest in our class.

43.to learn English 5 years ago.

44.I like reading books but I don't like watching films.

45.swim in that polluted lake, boys.

46.My future house might be on the Moon.

47.I saw that movie last year.

48. Don't talk during the meeting.

49.If we recycle more, we will save a lot of materials.

50. The Nile is the longest river in the world.

C

B

giao đều mà =)

D.was->were 

children số nhiều

1. A computer will help me do the housework.

2. Hoi An is famous for traditional crafts and old houses and buildings.

3.Yesterday we visited the Temple of Literature.

4.My future dream house will be by the sea.