76．You won't watch TV u ________________you finish your homework.

75．All the friends went to my friend's party __________me, because he didn't invite me.

74．He went to Wenchuan as a v ____________after the earthquake last year.

73．Mother was cooking in the k _________when I came home.

72．Don't speak too fast. I can't f ___________you.

71．We should help the people when they are in_______________．

B)根据句意及所给首字母提示，完成句中所缺单词。

70．I always get nervous when I see the envelope from school in the mail，but ________I did OK this time．

69．-What does “happen” mean?　 -It has the same___________ as take place”．

68．I think Liu Xiang and Yao Ming are both national___________ in China．

67．I'm not a child now．I Call do the washing by________________．