51. Meiqing's mother did.

50. Every child had to bring some food for the Children's Day party.

49. She knew that Miss Lee would give them presents.

48. I put them on the shelf.

F.

47. No, I do not water the plants daily.

46. I fed it last night.

45. There are twelve months in a year.

44. It is because the jokes are funny.

43. Father likes to play chess when he is free.

E.

42. He takes good care of his pets.