I'm good () buying jeans,but now I can't choose which pair of jeansto buy because they both look good ()me.A at,on B at,at C to,to Dfor,for

I'm good () buying jeans,but now I can't choose which pair of jeans
to buy because they both look good ()me.
A at,on B at,at C to,to Dfor,for

A
be good at doing sth 擅长做某事
look good on sb 穿在某人身上很好看

我很擅长买牛仔裤.但是我现在不知选哪一条,因为两条穿在我身上都好看.