Sam told the childen not to make so much noise in the classroom 改为被动语态

题目

Sam told the childen not to make so much noise in the classroom 改为被动语态
the children 看作 是单数还是复数，应用was ,还是were

答案

The children were told by her not to make so much noise in the classroom.
children 是复数,谓语动词用were