—Why are your eyes so red? You _______ have slept well last night.
—Yeah, I stayed up late writing a report.

A．can’tB．mustn’tC．needn’tD．won’t

A

解析試題分析：考查情態(tài)動(dòng)詞+完成式的用法：本題考查情態(tài)動(dòng)詞表推測(cè)的用法。句意：——你的眼睛為什么那么紅？昨天你不可能睡好�！野疽沟胶芡�，寫(xiě)一份報(bào)告。A. can’t have done過(guò)去不可能做了，B. mustn’t 表示推測(cè)用于肯定句中， C. needn’t have done本不必做而做了，D. won’t have done將不會(huì)已經(jīng)做了，答案 A。
考點(diǎn)：考查情態(tài)動(dòng)詞+完成式的用法

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