I.1c ethnic

2b school

3d decorated

4c great

5a borrows

II.6b since

7b was stolen

8c at

9a speak

10d didn't you

11b happily

12b speaking

13b who

14c although

15b which

16b to go

17a lend

18b slowly

19a eat

20d should start

21a therefore

22d despite

23b why

24c whose

25a up

III.26b what do you like doing in your free time?

27a what are your favorite TV programs?

28c he spends much time on TV programs

29d there are thousand of volcanoes all over the world

30b a volcano is a mountain that is opened at the top

III.31 help

32 go

33 to be

 34 going

35 could

IV.36a in

37c on

38d to

39b and

40b called

41a make

42d happened

43a on

V.44a she said to me that she would go to China the following week

45c I wish she went to China with us

46a my bike has been stolen

47d she is the woman whom I met last week

48a if money growed on trees we would be rich

49c I haven't seen her for 10 years

50b although cars cause pollution people still want them