单项选择题

All our attempts to （） the child from drowning were in vain.

A. regain
B. recover
C. reserve
D. rescue

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单项选择题

I was always taught that it was（） to interrupt.

A. rude
B. coarse
C. rough
D. crude

单项选择题

A. behavior
B. words
C. reactions
D. mood

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