问题
6．Be careful! The slightest spark（火花）could ______ the fireworks.
A:set about
B:set off
C:set out
D:set up
B:set off
C:set out
D:set up
正确答案是：
同类题型
The driver drove _______ hit at a big tree and the car came to s stop
Don’t smoke here, please. —______.
She is planning on driving. Let’s help her______the best road to take.
You can take any seat _____is free .
The girl is too young to look after __________. You shouldn’tleave her at home _________.