It’s hard to finish the work in a day. You’d better ____ your friends to help yo

题干

It’s hard to finish the work in a day. You’d better ____ your friends to help you.

A．call for

B．call on

C．call at

D．call up

上一题下一题 0.85难度单项选择更新时间:2010-06-11 06:57:43

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