(how many times a day )does he brush his teeth.划线部分换一种表达

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(how many times a day )does he brush his teeth.划线部分换一种表达

(how many times a day )does he brush his teeth.划线部分换一种表达
(how many times a day )does he brush his teeth.划线部分换一种表达

(how many times a day )does he brush his teeth.划线部分换一种表达
How often does he brush his teeth?