Unless you work as hard as you can, you won’t ______ your classmates.A．fall behi_刷题宝

题干

Unless you work as hard as you can, you won’t ______ your classmates.

A．fall behind	B．keep on with
C．keep up with	D．catch up

上一题下一题 0.85难度单项选择更新时间:2010-06-19 05:39:07

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