打扫教室

• We were cleaning the classroom when they came in
  他们进来的时候我们在打扫教室。
• The students clean the classroom in turns everyday
  学生们每天轮流打扫教室。
• The students clean the classroom everyday in turn
  学生们每天轮流打扫教室。
• Two pupils were assigned to sweep the classroom
  两个学生被指派打扫教室。
• Students clean the class room in turns everyday
  学生们每天轮流打扫教室。
• We found the key while we were cleaning the classroom
  我们在打扫教室时发现了这把钥匙
• The students clean the classroom everyday in turn
  学生们每天轮流打扫教室
• Students clean the classroom in turn everyday
  学生们每天轮流打扫教室。
• Students clean the classroom everyday in turn
  学生们每天轮流打扫教室。
• Students clear the classroom in turn everyday
  学生们每天轮流打扫教室。