Are you good at （swim）

Are you good at （swim） my parents are very good at ( )《swim》 单项选择 ( )1.Are you good at A.swim B.swimming Are yo good at()?A.swim B.swimming C.swims Are they good at ( 用swim的正确形式填空 They are good at swim.They are good at swimming.这两个表达方式都对吗?请 Are they good at ()?-yes,they are.A.swim B.to swim C.swimmin Are you good at ________? Are you good at swimming? you,at,are,good,swimming what are you good at Are you good at Chinese