I was watching the news on TV ________ the power went off.A．whenB．asC．whileD．unt_刷题宝

题干

I was watching the news on TV ________ the power went off.

A．when

B．as

C．while

D．until ．

上一题下一题 0.85难度单项选择更新时间:2011-12-09 10:20:22

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