Who clean the blackboard yesterday?答案是John did.就是想问问为什么是did而不是cleaned?问题打错了是who cleaned

who ____(clean) the classroom? Who helped you clean the room?（改为被动语态）Who_______you_______to clean the room? who's on d___ today please clean the blackboard 填空：who is s____ to clean the blackboard? Who else ____(clean)the classroom with you today? clean the clean the clean the Clean the ——who help you clean the classroom?——Daming____.——who help you clean the classroom?——Daming________. 原因 为什么用would like who would like to clean the blackboard原因 为什么用would like who would like to clean the blackboard --Who ___to clean the blackboard __class?--The students of Team Two are Some social workers are the ones who clean up the dust 是什么意思 clean of limb 什么意思?People abroad think that the English gentleman is someone who is clean of limb...其中短语clean of limb什么意思啊? 初中英语 现在完成时 的问题the room is so clean who has cleaned it 用cleaned行不行 麻烦解释这一句的语法 Who would you rather（have clean）the room. ()turn is it to clean the blackboard today?a:who.b:which,c:whose.d:what. who ( )to clean the classroom() afternoon?A,would like ;this B will;tomorrow Cwant; this