I have been ______ English ______ ten years.

A. study; for
B. studying; since
C. studying; for
D. to study; since
C
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科目：初中英語 來源：月考題 題型：單選題

I have been ______ English ______ ten years.
[     ]
A. study; for
B. studying; since
C. studying; for
D. to study; since

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