Chalk ______write on the blackboard by most of the teachers

A chalk is used by （teachers） to write on the blackboard 对括号 Let'______write on the wall. 1.The girl _____(draw ) a co on the blackboard with chalk no No one will write on the blackboard with chalk.(保持原意不变） there is \are two boxes of chalk on the desk? there ____ two boxes of chalk on the desk. Teachers write with _____ on the blackboard.(横线上填入适当的单词） The teacher is writing ____a piece of chalk on the blackboar in还是on the blackboard on the blackboard的汉语 1、write on the blackboard -------- ---------- on the ------- there is a set of keys,a book and some chalk on the desk?