Unit5 What are the shirts made of?SectionB (3a--Self-check)I. 单项选择：（BC 层学生必做，A 层选做或不做）( )1. Paper cutting ___________around for over 1 ,500 years.A. isB. will beC. has beenD. was( )2. Do you know bananas ______________in Hainan?A. growsB. is grownC. grewD. are grown( )3....
