- does he brush his teeth a day? -Twice. [ ]A. What time B. How long C. When D. How many times 题目和参考答案——青夏教育精英家教网—

题目内容

-_______does he brush his teeth a day?
-Twice.

[ ]

A. What time
B.  How long
C. When
D.  How many times

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