The police still haven’t found her, but they’re doing all they . A. mayB. canC. mustD. wil

发布时间：2020-08-17 14:29:25

The police still haven’t found her, but they’re doing all they     .
A. may
B. can
C. must
D. will

网友回答

A. may
(答案→)B. can
C. must
D. will
解析：do all one can 意为“尽力”或“竭尽全力”。
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