The girl must have been reading at this moment last Sunday, ______ she?

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问题 The girl must have been reading at this moment last Sunday, ______ she?

选项 A、wasn’t
B、didn’t
C、mustn’ t
D、hadn’t

答案A

解析 must表示“推测”,此种句式改为反义疑问句时,应将其还原为非推测性的 事实陈述句式,即The girl was reading at this moment last Sunday。故答案选A。
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