How long do you think it will be _______ China sends another manned spaceship to the moon?A.whenB.un

题目简介

How long do you think it will be _______ China sends another manned spaceship to the moon?A.whenB.un

题目详情

How long do you think it will be _______ China sends another manned spaceship to the moon?
A.whenB.untilC.thatD.before
题型:单选题难度:中档来源:不详

答案

D

试题分析:句意:你认为还要有多久中国才能发射另一个载人飞船上月球。这里do you think 是插入语,这句话用了固定句型:It will be+一段时间+before…,要多久才…,since也可以和一段时间连用,但是是:It is/has been+一段时间+since,所以选D。

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