题目内容：
Nancy's gone to work but her car's still there. She __________ by bus.
A．must have gone B．should have gone
C．ought to have gone
D．could have gone
参考答案：
答案解析：
单选题：Nancy's gone to work but her car's still there. She ________
- 题目分类：专四
- 题目类型：单选题
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B．should have gone
C．ought to have gone
D．could have gone