题目内容：
She looks tired. She __________last night.
A．should have stayed up late B．must have stayed up late
C．need have stayed up late
D．would have stayed up late
参考答案：
答案解析：
单选题：She looks tired. She __________last night.
- 题目分类：成人英语三级
- 题目类型：单选题
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B．must have stayed up late
C．need have stayed up late
D．would have stayed up late