Once a student is found____in the classroom,he or she will be punished.
问题描述:
Once a student is found____in the classroom,he or she will be punished.
如题A.smoking B.to smoke C.smoke 选A原因.
答
Once a student is found____in the classroom,he or she will be punished.
【sb is found doing sth】某人被发现做...
用动名词形式
固定用法