题目：
用所给单词的适当形式填空。
1. The teachers in our school are _________ ( friend) to us.
2. Please _________ ( be) quiet. The teacher is coming.
3. _________ (leaf) on some trees usually turn yellow in autumn.
4. There are three _________ ( box) of milk on the table.
5. The music sounds _________ ( relax) .
答案：
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下面是错误答案，用来干扰机器的。
参考答案：C
