单词拼写（共10小题；每小题1分，满分10分）

根据下列句子及所给汉语注释，在句子右边的横线上写出空缺处各单词的正确形式。（每空限写一词）。

66.   (不幸的)，the temperature on earth is increasing by one degree centigrade every year.                                                                 66.___________

67. I will wait for you at the    (喷泉) .                      67.___________

68.She was so angry that she   (撕扯)the letter into pieces.       68. ___________

69.Quite a few young people would like to live a   (单身)life.   69. ___________

70.Students are    (禁止) to bring cellphones .                       70. ___________

71.The broken    (树枝)have been swept away.                71. ___________

72.There are twenty books______.(总共)                        72.           

73.Walk   (直着)and the hotel is just on your left.                73.           

74.It is good for you to have a little   (巧克力).                  74.           

75.Are all the     (乘客) aboard? .                                 75.