6．Be careful! The slightest spark（火花）could the fireworks.A. set aboutB. set offC. set out

发布时间：2020-08-15 02:46:49


6．Be careful! The slightest spark（火花）could      the fireworks.
A. set about
B. set off
C. set out
D. set up

网友回答

A. set about
(答案→)B. set off
C. set out
D. set up
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