21.They said their teacher sometimes explained the difficult lesson.

22.Nam said he was doing his homework then.

23.Nam said he was not a pupil.

24.Nam said he was going to Ho Chi Minh City.

25.He said to me that he had gone to my house.

26.She said that she knew my difficulties.

27.He said to me that he had given him my present.

28.He asked me who Oliver Twist was.

29.My mother asked me what the matter was with you.

30.I asked him which book he found.

31.He asked me when I finished my work.

32.Mai asked me why I hadn't come.

33.She said that she had a wonderful evening.

34.The teacher tells us that we should learn harder and harder.

35.My mother says that we are having a party the day after.

36.I say to him that our teacher will come on time.

37.Mai's parents say that they are going to invite twenty guests to the party.

38.Geogre said to Mary that he had seen the film three times.

39.She said to him to give her another glass of wine.

40.She said to me to bring her a book.

41.Mother said to him to open the window.

42.He said to me to shut the door after me.

43.The captain said to them to wait there still he came back.

44.He begged her not to go out with him.

45.She told me not to forget my bag.

46.The chemistry teacher told us not to eat in the lab.

47.He advised her not to give herself up.

48.She told the boy not to hurt themselves.

49.The instructors warned the sport man not to repeat that mistake again.

50.The assistant said to me to leave my address with the secretary.