He must be in the classroom ,___he?

问题描述:

He must be in the classroom ,___he?
A mustn't B needn't C hasn't D isn't

当然是D
因为这是猜测句 不是表示“必须”的MUST
做猜测句的反义疑问的话,是要根据句子时态按事实还原
比如这句还原成 he is in the room, isn't he
所以选D