Australia is one of the few countries people drive on the left.A. where　B. thatC. when　D.

问题补充：

Australia is one of the few countries people drive on the left.

A. where

B. that

C. when

D. which

答案：

(答案→)A. where

B. that

C. when

D. which

解析：考查定语从句。句意：在一些国家，人们靠左行驶，澳大利亚就是这几个国家之一。此句中的“countries”是先行词，后接定语从句，从句的引导词在句中作地点状语，故选A。