问题
选择题
6. Last night I was watching the news about Obama’s wining of the Nobel Peace Prize on TV ________ the power went off.
A．while
B．as
C．when
D．During
答案
答案：C
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6. Last night I was watching the news about Obama’s wining of the Nobel Peace Prize on TV ________ the power went off.
A．while
B．as
C．when
D．During
答案：C