Question

【题目】—Why are your eyes so red? You _______ have slept well last night.
—Yeah, I stayed up late writing a report.
A.can't
B.mustn't
C.needn't
D.won't

Answer 1

【答案】A
【解析】句意：——你眼睛怎么这么红？你昨晚一定没睡好吧。——我熬夜写报告。根据why are your eyes so red？可以得出对方一定没有睡好，故用can’t（不可能）。mustn’t（禁止，不准）；needn’t（不必）；won’t（不会）。