Do you like swimming and skating I like skating.Look!the boys running after the boll.

1. Do you like swimming and skating ?I like skating.
and 改为or
肯定句用and ,否定句和疑问句用or
2. Look! the boys running after the boll.
running 改为 is running
be+动词ing现在进行时的结构
3. my sister is thiner than me.
thiner---thinner 单词拼写错误

4. Nancy is five year older than her cousin
five year----five years五岁
5.My bag is the same as her
her 改为hers 相当于 her bag ,这里名词性物主代词
望采纳,谢谢!