Peter visits his grangparents _once a week_（①否 ②一般 ③ 提问） 急
问题描述：
Peter visits his grangparents _once a week_（①否 ②一般 ③ 提问） 急
答
How often does peter visit his grandparents?——提问
Peter doesn't visit his grandparents once a week——否定
Does peter visit his grandparents once a week？——一般
答
否定句：Peter doesn't visit his grandparents once a week.
一般疑问句：Does Peter visit his granparents once a week?
提问：How often does peter visit his granparents