根据下列句子及所给汉语注释，写出空缺处各单词的正确形式，每空只写一词。

71. How many 　▲　（牙齿）does your baby have? Only one.

72. We should often deal with problems by 　▲　 （将...视为）them as challenges.

73. If I were you, I would refuse his  　▲　（邀请）, because he is rude to us.

74. Before going to bed, the old lady checked that both doors were  　▲　（安全地）shut.

75. I wonder who’s  　▲　（偷）my necklace. I can’t find it anywhere.

_______ oranges do you want and ______milk would you like?

---____ students are there in your class?　
---Fifty-five.
　　A. What　　B. How many　 　　C. How much　　　D. How
　　

B

—_______ is it?

—It’s seven thirty.

A．How many 　　     B．How much          C．What day            D．What time