2020_2021学年高中英语课时分层作业5Unit2RobotsSectionⅡ含解析新人教版选修7

Unit 2 Robots课时分层作业(五)　Section Ⅱ[语言知识练习固基础]Ⅰ.单句语法填空1．Hearing the student's answer，the old professor