单项选择题

It is not urgent, so you may do it ______ your leisure.

A. at
B. in
C. by
D. with
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单项选择题
The ______ earthquake left 3,000 homeless. A. violent B. extensive C. endless D. furious
The ______ earthquake left 3,000 homeless.
A. violent B. extensive C. endless D. furious
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