—______ did your aunt leave China?
—She ______ for three years.

A. When; has left
B. When; has been away
C. How long; has left
D. How long; has been away
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科目：初中英語 來源：模擬題 題型：單選題

— ______ did your aunt leave China?
— She ______ for three years.
[     ]
A. When; has left
B. When; has been away
C. How long; has left
D. How long; has been away

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