41.  People in many parts of China have not enough food and clothes.

42.  The text as follows: long long ago, there are not donkeys in the place called" Qian".

43.  at present there are not many Milu deer in nature parks in China, but the number is increasing every year.

44.  at least you mustn't change your mind at your pleasure if something unexpected really prevents you from coming, you must tell the host or hostess about it several days before the dinner for at that time the host or hostess must have begun to go shopping and prepare for the dinner it is always considered impolite to tell the host or hostess that you are not able to came at the last minute .

45.  sugar is not a necessary part of a healthy diet.

46.  "Are you sure, it's not here."

47.  He was very strict with us, and his meant I would not be able to sleep till the lunch.

48.  But he professor said it was not necessary.

49.  I saw a man who can not speak sit down at the other table beside us.

50.  Though hat, we were not afraid to clean them.