题目内容
How long do you think ________ China launches another manned spaceship?
[ ]
A.
will it be until
B.
it will be before
C.
will it be when
D.
it will be that
答案:B
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题目内容
How long do you think ________ China launches another manned spaceship?
will it be until
it will be before
will it be when
it will be that