who should you ask to volunteer at your local school

问题描述:

who should you ask to volunteer at your local school
Who should be asked to volunteer at your local school?(改被动语态)
who should ____ ____ ____volunteer at your locar school

你自己已经回答了不是么……
Who should be asked to volunteer at your local school?这一句就是被动语态啊=.=