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It’saseriousproblem．Wecan’tdecide

栏目: 练习题 / 发布于: / 人气:1.96W

问题详情：

It’saseriousproblem．Wecan’tdecide

It’s a serious problem．We can’t decide ________ Mr Harry comes back．

A．while B．since C．until D．when

【回答】

C

知识点：连词

题型：选择题

Tags：tdecide

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