问题
选择题
I was watching the news on TV _______ the power went off.
A．when
B．as
C．while
D．until
答案
答案：A
考查连词。be v-ing … when …正在做……突然……，句意：我正在看新闻的时候突然停电了。故选A。
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I was watching the news on TV _______ the power went off.
A．when
B．as
C．while
D．until
答案：A
考查连词。be v-ing … when …正在做……突然……，句意：我正在看新闻的时候突然停电了。故选A。