题目列表(包括答案和解析)
It is no longer a question _____ man is learning more and more about space .
A.whether B.that C.if D.how
It is no longer a question ________ man is learning more and more about space.
A.whether
B.that
C.if
D.how
It’s no longer a question ______ man is learning more and more about space.
A. whether B. that
C. if D. how
A. whether B. that
C. if D. how
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