Luckily, we’d brought a road map, we would have lost our way.
A. without it
B. with that
C. without which
D. without that
网友回答
A. without it
B. with that
(答案→)C. without which
D. without that
解析：
这题考查介词+which引导定语从句的用法：两句话中间是逗号，说明是定语从句，而且从句意看是：没有地图我们就会迷路。选C。