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题目内容
（河南工业大学-大学英语（一））
When we called at the market, we felt amazed at the use ________ the waste plastic bags.( )(本题2.0分)
A、 they had made
B、 they had made of
C、 they had put
D、 they had put to
A、 they had made
B、 they had made of
C、 they had put
D、 they had put to
参考答案