Mary and I have been close friends ______ we met each other 10 years ago.A．whenB_刷题宝

题干

Mary and I have been close friends ______ we met each other 10 years ago.

A．when

B．since

C．until

D．as

上一题下一题 0.64难度单项选择更新时间:2013-04-03 06:56:50

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