everyone can play an important part in society.as members,weshould try our best to do_.Awhat we should do B how we should do 为毛选A

问题描述:

everyone can play an important part in society.as members,weshould try our best to do_.
Awhat we should do B how we should do 为毛选A

do what we should do = 做我们应该做的.
这样与句子的前半部分相呼应.