题目内容

固定发卷应从上下两个方向固定发网

A. 对
B. 错

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The materials____(use, used) have all been tested to make sure that they are safe.

I felt____(embarrassing, embarrassed), not knowing how to answer his question, but Jane saved me by changing the subject.

If it were not for the____(involved expense, expense involved), I would go there by air.

____(Concerned parents, Parents concerned) have complained about the dangerous playground.

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