Unit 8 It must belong to Carla.SectionA (3a-4c)I. 单项选择：（BC 层学生必做，A 层选做或不做）( )1. 1.----Is Miss Gao in the reading room?---- No, she ____________be there. She has gone to HongKong.A. mustn'tB. needn'tC. won'tD. can't( )2. -----When do you think ___________?----I'm not sure....
