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

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