“Drive-ins” have large parking lots customers are served in their cars by waitress.
A. who
B. when
C. which
D. where
网友回答
A. who
B. when
C. which
(答案→)D. where
解析：考查定语从句。题中先行词为parking lots，在从句中作地点状语，故用关系副词where。句意：“免下车旅馆”是个大的停车场，在那里顾客可以在他们的车里接收到服务员的服务。故D正确。