You can pay now or ______ you come back to pick up the bike.A．then B．when C．whil_刷题宝

题干

You can pay now or ______ you come back to pick up the bike.

A．then

B．when

C．while

D．as

上一题下一题 0.4难度单项选择更新时间:2011-05-25 09:15:46

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