What are they good at?

what are they good at?怎么回答 what good children they are what are you good at what good parents both of they are. what are you good at?怎么回答 They are good at swim.They are good at swimming.这两个表达方式都对吗?请 He says.They are good at English.合并成一句 He said.They are good what subjects are you good at?why?what subjects Are they better at skate than you?和Are they good at skate th 请按THEY LIVE IN---- .THEY EAT--- .THEY ARE GOOD AT--- .THEY - good,they,climbing,are at连词成句 They are good at playing basketball.（转为疑问句）