look -------the blackboard and listen ---------the teacher.怎

look -------the blackboard and listen ---------the teacher.怎 You should look at the blackboard and I___to the teacher car Look at the blackboard please look ----- the blackboard. In class ,we must listen to the teacher and look at the b___ ()the teacher ,please.A. listen B.Listen to C.Look you should look at the blackboard and _l________to the teach Look!The students are ______ the teacher carefully.(listen) please look at the blackboard and （）your books Please （）up and look at the blackboard 填空 the teacher__the blackboard and said:"Look at here,please look at the blackboard,please.