i like swimming,diving,and riding my bike为什么用,diving的后面有and为什么还要用逗号

i like swimming as I like going swimming 还是I like to go swimming? I like go swimming还是I like swimming哪个正确 i like go swimming 还是i like going swimming快 I like s( ) because I like swimming. I like swimming还是swim? I don't like swimming. I like go swimming.I like gonging to swimming.I like go to swimming. I like swimming.I ___ ___ of swimming. I like swimming very much=I ( ) ( ) ( ) swimming 快! I like swimming 用Tom 代替I I like swimming中swimming为什么要用现在分词 I like swimming;he likes swimming,too.(改为同义句) I like swimming改为否定句,还有He likes swimming. I like watching the swimming r__on TV I am like swimming very much. I like swimming and running.的问句. i like swimming best的同义句