Though they are very busy every day, they manage to get tighter_______.A．by and_刷题宝

题干

Though they are very busy every day, they manage to get tighter_______.

A．by and by

B．now and then

C． all the time

D．more or less

上一题下一题 0.64难度单项选择更新时间:2012-09-25 09:19:35

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