题目内容

根据句意及汉语提示完成句子。

1. We should not_____ (坏,破坏) our environment.
2. The school is making_____(努力) to help poor students.
3. Smoking can_____(引起) lung cancer.
4. The policeman_____(命令) the thief to raise his hands.
5. It's wrong to_____(污染) the village.
6. You must____(签名) in when you come to the center.
7. My mother doesn't____(允许) me to play computer games.

1. damage   2. efforts   3. cause   4. ordered   5. pollute  6. sign  7. allow
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