单词拼写（共10小题；每小题1分，满分10分）
根据题中所给的首字母写出符合句意的单词的正确形式。
71. This kind of drug can p1..protect 2.affected 3.succeed 4.insects 5.contains children from mosquitoes.
72. The noise outside a6.endanger7.classical 8.musician 9.passers-by 10. performances our study.
73. Tom works so hard, so he will s sooner or later.
74. There are many kinds of i in the world, a bee is one kind of them.
75. Sea water c salt.
76. You will e your health if you work so hard.
77. She prefers pop music and jazz to c music.
78. A m is a person who performs or writes music, especially as his/her job.
79. Police asked some p to get some evidence about the accident happened just now.
80. The group of popular singers will give another two p before leaving China.
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