i have cleaned the door twice（对画线部分提问 划线部分：twice)

i have cleaned the door twice（对画线部分提问 划线部分：twice) I have been there twice.(对划线部分提问)twice画线 ------ -------- --- I have seen the film twice .对划线部分提问 I visit my grandparents twice a month.对划线部分提问,划线部分为twice. I exercise twice a week.对划线部分提问,划线部分是twice Sarah watches TV twice a week.(对画线部分提问)(划线单词:twice) I have been to Beijing twice.(就划线部分提问) 对划线部分提问：I watch TV (twice a week) We have science classes twice a week对画线部分提问（twice a week） they have read the book（ twice）.对划线部分提问 句型转换对划线部分提问,划线部分是（twice）Mr and Mrs White have been to the We 5.I go to the Palace Museum twice a year(对划线部分提问)