It's 5 days we came here. Why shouldn't we start?A．whenB．beforeC．asD．_刷题宝

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It's 5 days we came here. Why shouldn't we start?

A．when

B．before

C．as

D．since

上一题下一题 0.64难度单项选择更新时间:2014-07-14 05:03:30

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