let's (clean)the claSSroon

let's (clean)the claSSroon let,s clean the windows Let`s clean the board Let's help Millie_______( clean)the classroom Let's clean the living room. 改错Let’s me clean the window. Let′s ( )(clean)the house now. The classroon is so clean.Someone---(could/must)clean it jus let's help the old man ____(clean)the room. Let's clean the blackboard.同义句是什么? let's clean up the broken glass.译全句 Let's clean the room now.改为否定句