22. If the air in this city is pure, we will be healthy.

23. I wish I could speak English fluently

24. They ask about the athletes whose pictures we are looking at.

25. If they weren't careless, they wouldn't make a lot of mistakes.

26. I used to stay up late

27. The classrooms are cleaned by the students

28. I wish you could take part in our tour.

29. A goal was scored in the 89th minute

30. My car is repaired at the garage

31. When I arrived at the office, Jack had left.

32. Before buying a new television, Brian checked all the priecs

33. Brenda, whom I went on holiday with is a friend

34. This is Mr Smith ,whose son Bill plays in our team.

35. John's flat is bigger than mine in the same block

36. I was promised a bicycle two days ago.

37. Because of raning heavily, we can't go pinic

38. Because he is old, so he easy to get tired

39. I started study English for 4 years

40. The computers can be used by everyone

41. I don't know the woman whose daughter is working here

`Go od luck!`

22. If the air is pure, we will be healthy.

23. I wish I could speak English fluently.

24. They ask about the athlete who we are looking at the picture of.

25. If they aren't careless, they won't make a lot of mistakes.

26. I used to stay up late.

27. The classroom are being cleaned by the students.

28. I wish you could take part in our team.

29. A goal was scored at the $89^{th}$ minutes.

30. My car are being repaired at the garage.

31. When I arrived there, Jack had left the office.

32. Before Brian bought a new television, he had checked all prices.

33. Brenda, who I went on holiday with, is a friend.

34. This is Mr. Smith whose son, Bill, plays in our team.

35. John's flat is much large as mine.

36. I was promised a bicycle by parents 2 days ago.

37. Because of the heavy rain, we can't go on a picnic.

38. Because he is old, he is easy to get tired.

39. I started learning English 4 years ago.

40. The computer can be used.

41. I don't know the woman whose the daughter is working here.