He came here _____.

A. three years ago
B. for three years
C. about three years
D. three years before
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科目:初中英語(yǔ) 來(lái)源:同步題 題型:單選題

He came here _____.
[     ]
A. three years ago
B. for three years
C. about three years
D. three years before

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