I sometimes clean blackboard to my teacher.he often clean bl

I sometimes clean blackboard to my teacher.he often clean bl clean i sometimes blackboard the怎么连成句子 the teacher asked me to clean the blackboard. It is my turn to clean the blackboard today I'd like to clean the blackboard.(一般疑问句） Clean,sometimes,my,l,room I often help my mother clean the room.这句话中clean前的to可以用吗? He often helps my mum to clean the house on Sunday.为什么用to cl Sometimes l clean my room.Sometimes lclean I would like to play football.变为否定句 I often clean my room.变为 to,the,told,blackboard,me,she,clean Please r_____ to clean the blackboard.