【題目】— How long does it take to get to the airport?

— Forty minutes. But it's foggy today. I'm not sure ________ the highway will be closed soon. Let's set off earlier.

A.whetherB.whenC.thatD.why

【答案】A

【解析】

句意：---去飛機(jī)場需要多久？---四十分鐘。但是今天有霧，我不太確定高速不久后會(huì)不會(huì)關(guān)閉，讓我們?cè)琰c(diǎn)出發(fā)吧。whether意為“是否”， when意為“什么時(shí)候”， that引導(dǎo)賓語從句沒有詞義，why 意為“為什么”,the highway will be closed soon是I’m not sure的賓語，根據(jù)句意“不太確定”可知選引導(dǎo)詞whether引導(dǎo)賓語從句。

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