46.　　 A plane is a machine can fly.

45.　　 The park stands at the place that the two rivers meet.

44.　　 Do you know the young man whom has been chosen chairman?

43.　　 The doctor whom they want to see have come.

42.　　 The day which she had to leave arrived at last.

41.　　 This is the only book that were borrowed from the library.

40.　　 The watch that Mother bought it for me works very well.

39.　　 Can you think of anyone who’s house was here?

38.　　 This is all which I can do for you.

37.　　 The students are playing football on the playground are of Class Two .