He has to drop____his son at piano lessons.

He has to drop____his son at piano lessons. is he piano going training to take that at the lessons schoo She has piano lessons at weekends.改为一般疑问句 After Tom has a look at his son,he will go to bed.(同义句） He ---- to do his lessons at fight every evening. Her son is ill.She has to him at home Her son is ill. She has to him at home I'm going　to take piano lessons. My son can’t go to the cinema with you.He must the lessons f 高一定语从句高考题,1.The girl arrange to have piano lessons at the tr Hs is going to taje piano lessons.对划线部分提问（take piano lessons He has been worked hard ___his lessons.用at还是in啊?