Unit8 It must belong to Carla.SectionA (1a-2d)I. 单项选择:(BC 层学生必做,A 层选做或不做)( )1. ---What do you think of the students in China? ----You know, in China, teenagers have ______homework to do every day. They are ______tired.A. too much; too manyB. much too; too muchC. too m...