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.