题目内容：
Be friendly. ______ To be a volunteer, you might meet new people who want to make friends with.
A. Treat others like friends, and they'll do the same for you.
B.Begin to do it at once.
C.Try to understand what other people are facing.
D.Here's some advice on how to do the volunteering jobs well.
E.Don't try to do everything by yourself.
参考答案：