who's on d___ today please clean the blackboard

who's on d___ today please clean the blackboard Who clean the blackboard yesterday? Let him______(clean)the blackboard today lucy,you clean the blackboard today, Let him ___(clean)the blackboard today ()turn is it to clean the blackboard today?a:who.b:which,c:w It's my turn to clean the blackboard and (s )the floor today Clean,the,blackboard,please怎么读 Please clean the blackboard的否定句 Please r_____ to clean the blackboard. Tim is on duty today.Look!He _____ [clean]the blackboard. It`s time for me to clean the blackboard today.[ 同义句]