—How long does it take to get to the airport？
— Forty minutes.But it's snowing today.I'm not sure the highway will close soon.Let's set off earlier.（　　）

A．how

B．when

C．whether

D．why

【答案】C

【解答】

【點(diǎn)評】

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發(fā)布：2024/4/20 14:35:0組卷：17引用：3難度：0.7

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—How long does it take to get to the airport？— Forty minutes.But it's snowing today.I'm not sure the highway will close soon.Let's set off earlier.（ ）