How long have you been away there这句话对吗

How long have you been away there这句话对吗 For how long have you been away from home how long have you kept this book?这句话对吗? How long have you had your watch?这句话对吗? "How long have you been How long have you been in the China?这句话有语法错误吗? How long have you ＿ from university?A graduated B been away A：How long have you been away from your home town?B：Since th How many times do you have been done?这句话的语法对吗 how long did you stay there/have you been stay there有什么区别? Have you been there?这句话是什么意思? How long have been away from your t_____