他们每周花好几个小时打扫教室的翻译：They spend several hours a week to clean the classroom 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

They spent several hours a week cleaning the classroom

They spend several hours a week to clean the classroom

Their each week spends for several hours to clean the classroom

They spend several hours a week cleaning classrooms

They spend several hours a week to clean the classroom