You can go out, you promise to be back before 10 o’clock.A．unlessB．as long asC．_刷题宝

题干

You can go out, you promise to be back before 10 o’clock.

A．unless

B．as long as

C．because

D．since

上一题下一题 0.64难度单项选择更新时间:2013-01-23 08:23:57

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