选择题：—The firemen tried their best to ______ the fire but in vain.A. put up B. put fo

题目分类：大学英语B级
题目类型：选择题
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题目内容：

—The firemen tried their best to ______ the fire but in vain.

A. put up B. put forward C. put down D. put out

参考答案：

答案解析：

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