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题目内容
（河南理工大学—大学英语2）
[单选题,1.3分]
He looks so tried this morning. He ____last night.
A.must stay up late
B.must have stayed up late
C.was staying up late
D.has stayed up late
He looks so tried this morning. He ____last night.
A.must stay up late
B.must have stayed up late
C.was staying up late
D.has stayed up late
参考答案