I was watching the news on TV the power went off. A.whenB.asC.whileD.until .
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I was watching the news on TV ________ the power went off.
| A.when | B.as | C.while | D.until . |
试题答案
A
解析

I was watching the news on TV ________ the power went off.
| A.when | B.as | C.while | D.until . |
A
解析