【題目】The river by waste products from the factory. We can find no fish in it.

A. has polluted B. will pollute

C. has been polluted D. will be polluted

【答案】C

【解析】

試題分析:句意:這條河已被工廠的廢料污染了。我們河里找不到魚。主語與動詞之間是被動的關(guān)系,被動語態(tài)的構(gòu)成:be + 動詞的過去分詞,排除A,B;結(jié)合語境理解,時態(tài)為現(xiàn)在完成時態(tài)。故答案為C。

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