【題目】We _____________ the environment. It is important for us all.

A.ought protectB.shouldn't protectC.ought to protectD.ought not protect

【答案】C

【解析】

句意:我們應該保護環(huán)境。這對我們所有人都很重要。

ought to do意為“應該做……”,否定是ought not to do,這里的to不可省略,排除AD。shouldn't protect意為“不應該保護”,動詞protect意為“保護”,環(huán)境很重要,應該保護,故選C。

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