“does he brush his teeth a day?” “Twice.”A. What timeB. How longC. WhenD. How many times

问题补充：

“does he brush his teeth a day?” “Twice.”

A. What time

B. How long

C. When

D. How many times

答案：

A. What time

B. How long

C. When

(答案→)D. How many times

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