Sorry to say it will be years _______ we really have classes here with only 25 s

题干

Sorry to say it will be years _______ we really have classes here with only 25 students.

A．since

B．that

C．when

D．before

上一题下一题 0.85难度单项选择更新时间:2013-04-28 10:22:03

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