ways to get on well with your classmates or you will get yourself very lonely.A. To find

问题补充：

ways to get on well with your classmates, or you will get yourself very lonely.

A. To find

B. Find

C. Finding

D. Found

答案：

A. To find

(答案→)B. Find

C. Finding

D. Found

解析：句意：找一个与你的同学们相处好的方式，否则你将会便你自己很孤独。考查：祈使句，or 接从句等于if引导的条件状语从句。故选B