改被动语态：1、He has put them into the box.2、They are treating the patient.
问题描述：
改被动语态：1、He has put them into the box.2、They are treating the patient.
3、The teacher gave us a lot of homework.【两种
答
1.They have been put into the box by him2.The patient is being treated by them3.We were given a lot of homework by the teacher.A lot of homework was given to us by the teacher.