77. Yesterday I was doing some shopping in the supermarket when I met a friend of _________(my).

76. I think English is very useful. Are you __________________ (interest) in it?

75. Madam, before you take the medicine, you must look at the _______________(说明) very carefully.

B. 根据句意，用括号中所给词的正确形式填空。

74. Mr White rang the airport to find out the __________ (航班) from New York to Beijing.

73. Li Ping made faces at the baby. Then it stopped ___________(哭) and smiled.

72. Shanghai is in the e_____________ part of China.

A. 根据句意和首字母或中文提示，写出句中所缺单词。

71. July is the s_____________ month of the year.