单选题：Passage Three．听材料，回答下列各题：Why did the speaker say that she ob

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题目内容：
Passage Three．
听材料，回答下列各题：
Why did the speaker say that she obviously had to go? A．Milly was probably her secret sweetheart.
B．The farmer was threatening her.
C．She was curious about who Milly was.
D．She was a doctor.

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