the man goes to see the doctor once a month对划线部分提问 划线部分:once a month
问题描述:
the man goes to see the doctor once a month对划线部分提问 划线部分:once a month
答
how often does the man go to see the doctor?
答
When does the man go to see hte doctor?
答
How often does the man go to see the doctor?