It was 1995 __________ we began to develop the new computer system.A．whenB．which_刷题宝

题干

It was 1995 __________ we began to develop the new computer system.

A．when

B．which

C．since

D．that

上一题下一题 0.64难度单项选择更新时间:2014-04-16 12:16:41

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