It’s foggy today. I’m not sure             the highway will close soon. Let’s set off earlier.

A.whetherB.whenC.howD.why

A

解析試題分析:句意今天有霧。我不知道是否高速公路不久就會關(guān)閉。讓我們早點(diǎn)動(dòng)身。A. whether 是否; B. when 什么時(shí)候;C. how 怎樣;D. why為什么;故選A。
考點(diǎn):考查引導(dǎo)詞的用法。

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