题目内容：
--I called you yesterday. A woman answered, but I didn't recognize her voice.--Oh, it _________my aunt Jean. A．must be
B．must have been
C．might be
D．can have been
参考答案：
答案解析：
单选题：--I called you yesterday. A woman answered, but I didn't rec
- 题目分类：中学英语
- 题目类型：单选题
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--Oh, it _________my aunt Jean. A．must be
B．must have been
C．might be
D．can have been