The waters of this great lake, which is also the world's deepest, have been by waste from a chemical factory.A．cleanedB．clearedC．dirtiedD．Thrown 题目和参考答案——青夏教育精英家教网—

题目内容

105. The waters of this great lake, which is also the world's deepest, have been ____ by waste from a chemical factory.

A．cleaned

B．cleared

C．dirtied

D．Thrown

略

练习册系列答案

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