是blackboard吗？造句：I am cleaning the blackboard in our classroom.The schedule is on a blackboard.The blackboard is on the wall.望采纳，谢谢！
用blacICboard造句？
是blackboard吗？
造句：I am cleaning the blackboard in our classroom.
The schedule is on a blackboard.
The blackboard is on the wall.
望采纳，谢谢！2020-09-07
