Mr Green drove slowly on the way home until he reached the high way, the speed l

Mr Green drove slowly on the way home until he reached the high way,  ______the speed limit was 60 miles per hour.    

A. because             B. which   C. where                          D. that

试题答案

C

解析:

此题考查定语从句的用法。先行词为the high way，故选where。