1. My mother is a teacher and she has t__________ English in this school for 20 years.

2.The n__________ side of the building gets less sun than the south.

3.If the sky is c__________, there’s no rain or cloud and you can see very far.

4. Bella can speak two l__________, French and Chinese.

5.S__________ can be used for making food and drinks sweet.

6.Susan was born in a v__________ but she works in the city now.

7. Jack is the tallest a__________ the three students.

8.Please don’t make a n__________ because the baby is sleeping now.

9.It is reported that two men were killed in a car a__________ early this morning.

10. My doctor advised me to take the medicine t__________ a day, in the morning and evening.

71. We shouldn't t_____ waste paper everywhere. It's our duty to keep our city clean.                 

72. The temperature will fall below zero at night in winter in the n______ of China.

73. The big earthquake in Japan caused over ten thousand people dead and about ten thousand people m________.

74. People who are friendly and helpful make it a lot e______ to get along with in a new place.         

75. Tracy is always very busy on weekdays, so she can only watch TV t_______ a week, on Saturdays and Sundays.

76. My h_______ are reading, singing and swimming.

77.The story i_______ is interesting, but it's a little difficult for children..                           

78. Do you think this kind of water is s_______ for drinking?                                     

79. Don't make any n_______. The baby is sleeping.       

80. There is someone k_______ at the door. Go and see who it is．