问题
选择题
The rescuers ________ to work as soon as they arrived at the spot of the accident.[ ]
A. set out
B. set off
C. set up
D. set in
答案
答案：A
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The rescuers ________ to work as soon as they arrived at the spot of the accident.[ ]
A. set out
B. set off
C. set up
D. set in
答案：A