If you are in a country they don’t speak your language you can show the address to the tax

问题补充：

If you are in a country they don’t speak your language，you can show the address to the taxi driver.

A. which

B. where

C. what

D. when

答案：

A. which

(答案→)B. where

C. what

D. when

解析：句意：如果你到了一个当地人不会说你的语言的国家，你可以将地址给出租车司机看。这里使用定语从句，先行词是a country，定语从句中不缺少主宾表，缺少的地点状语，用where引导的定语从句，选B。