unit 01 Kids Helping with Chores
unit 02 Letting Students Grade Teachers
unit 03 Fast-Food Chains Listning Calories
unit 04 Money and Relationship
unit 05 Community Service
unit 06 Using Computers to Study
unit 07 Money and Job
unit 08 Robots Replacing Human Wokers
unit 09 Children Using Social Media Sites
unit 10 Plastic Surgery for Teenagers