问题
a big dream — I want to go into space, _______will take some time to realize, I guess.
A:which
B:it
C:what
D:where
B:it
C:what
D:where
正确答案是：
同类题型
nk that thisfilm is _______ a film, it is also a good material for education
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It was at 5 o’clock __________ the visitors finally arrived at Pudong International Airport.