【題目】As a student, we should do everything we can __________ the environment.

A.protectB.to protectC.protectingD.protects

【答案】B

【解析】

句意：為了保護(hù)環(huán)境，我們應(yīng)該做我們能做的一切事情。

考查非謂語(yǔ)動(dòng)詞。A. protect動(dòng)詞原形；B. to protect動(dòng)詞不定式；C. protecting動(dòng)名詞或現(xiàn)在分詞；D. protects動(dòng)詞第三人稱單數(shù)形式。本題容易因前面的情態(tài)動(dòng)詞can誤選A選項(xiàng)，根據(jù)句子結(jié)構(gòu)，空格前的we can為后置定語(yǔ)，修飾前面的everything，即we should do everything (we can) to protect the environment，情態(tài)動(dòng)詞can省略了動(dòng)詞do,空格處應(yīng)填入動(dòng)詞不定式作目的狀語(yǔ)。故選B。

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