翻译he is writing on the blackboard with a piece of chalk

The teacher is writing ____a piece of chalk on the blackboar Mr.Wood is writing on the ＿＿with chalk a piece of chalk 1.The girl _____(draw ) a co on the blackboard with chalk no A chalk is used by （teachers） to write on the blackboard 对括号 Hanz gives me a piece of chalk.(Question with What) Tom is writing ( ) chalk on the wall.选A in B for Cwith Look who ( ) on the blackboard?A is writing B are writing No one will write on the blackboard with chalk.(保持原意不变） Look!The girl is __________(确实) writing on the blackboard. he is trying to draw a house on the blackboard 翻译:In his hand there is a piece of with some words on it : "