【題目】Once environment damage ________, it takes many years for the government to recover.

A.has doneB.is to doC.doesD.is done

【答案】D

【解析】

考查一般現(xiàn)在時態(tài)的被動語態(tài)。句意:一旦環(huán)境遭到破壞,政府需要很多年才能恢復。主句takes是一般現(xiàn)在時,結(jié)合句意從句也適應現(xiàn)在時,條件狀語從句的主語是damage,不可數(shù)名詞,單數(shù)第三人稱,和謂語動詞do之間是一種被動關(guān)系,所以once引導的條件狀語從句中用一般現(xiàn)在時態(tài)的被動語態(tài),故選D

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