In the cross-lake swimming race, a boat will be in case of an emergency.A. standing byB. t

发布时间：2020-08-16 08:01:51


In the cross-lake swimming race, a boat will be     in case of an emergency.
A. standing by
B. turning on
C. getting on
D. running on

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(答案→)A. standing by
B. turning on
C. getting on
D. running on
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