A)根据首字母及汉语提示，完成下列单词的拼写，使句意明确，语言通顺。

71.My parents don’t a_________ (准许)me to hang out with my friends.

72.Can you give me some a______ (建议)? I need your help.

73.Doctors say too much pressure is not good for a child’s d _________ (发展).

74.Can you e _______ (解释) to me how to do this math problem ?

75.To my s _______ (吃惊), he can do everything that I can’t do. 

B) 根据句意，用括号内所给词的适当形式填空。

76. There was an _________ (argue) happened between Tom and Jack last night.

77. Why don’t you sit down and  ____________ (communication) with your brother?

78. It’s crazy for Mothers to keep on ____________ (compare)their kids with others .

79. The teenagers have to work hard because of the _________ (press) from their parents.

80. My _________ (old) brother is not very nice to me. He always refuses to let me watch my favourite TV show.