【題目】He have watched TV at home for 1 saw hint in the classroom.

A. shouldn’t B. couldn’t C. mustn’t D. may not

【答案】B

【解析】考查情態(tài)動詞。他不可能在家看電視,因為我看見他在教室里。此處是對過去事情有把握的否定推測。couldn’t have done不可能已經(jīng)做了某事,故選B。

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