We believe scientists will a way to solve the problem of air pollution.A. set offB. put of

发布时间：2020-08-16 09:01:35

We believe scientists will     a way to solve the problem of air pollution.
A. set off
B. put off
C. e up with
D. catch up with

网友回答

A. set off
B. put off
(答案→)C. e up with
D. catch up with
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