Is there a gas station around ____ I can get some petrol?空格为啥填where?

Is there a gas station around ____ I can get some petrol?空格为啥填where?
Is there a gas station around ____ I can get some petrol?空格为啥填where?

Is there a gas station around ____ I can get some petrol?空格为啥填where?
定语从句,where代替前面的先行词同时在从句中充当地点状语

它要修饰前面的地点即 gas station

A.which B. where A around which=where which