单项选择题

Mr. Brown did not tell us（）or not he’ll be leaving next week.

A. whether
B. if
C. either
D. weather

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单项选择题
Since nobody is answering the phone, they（）

A. should have left
B. must have left
C. need have left
D. can have left
填空题
What did the man do to Tom’s story（）
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