We all should make a contribution to ______ our environment.

A. protects B. to protect

C. protecting D. protect

 

C

【解析】

試題分析：句意:我們都應(yīng)該為保護(hù)環(huán)境做貢獻(xiàn)。protect 保護(hù)，是一個(gè)動(dòng)詞。這句話中使用了短語make a contribution to ，對…做貢獻(xiàn)，短語中to 是一個(gè)介詞，因此后面跟名詞或動(dòng)名詞的形式。故選C。

考點(diǎn)：考查動(dòng)名詞作賓語。

 

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