The problem is we can master modern science and technology in a short time.A. ifB. thatC.

发布时间：2020-08-16 11:02:29

The problem is      we can master modern science and technology in a short time.
A. if
B. that
C. what
D. how

网友回答

A. if
B. that
C. what
(答案→)D. how
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