When _____ you start _____.

A. are, learning
B. do, learning
C. did, learn
D. did, learning
D
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科目:初中英語(yǔ) 來源:同步題 題型:單選題

When _____ you start _____.
[     ]
A. are, learning
B. do, learning
C. did, learn
D. did, learning

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