If you get in a foreign city you’d better stay where you are and wait for your friends A.

问题补充：

If you get in a foreign city, you’d better stay where you are and wait for your friends

A. lose

B. to lose

C. losing

D. lost

答案：

A. lose

B. to lose

C. losing

(答案→)D. lost

解析：get lost迷路。get+及物动词的过去分词形式也可构成被动语态。在get+done所在的句式中不用by引出谓语动词在逻辑上的主语。