这句话有没有什么语法问题?

We can learn
【how to be a useful person in society,正确
choosing witch（?写出了吧） way to solve the proplem between boys and girls】 from each other
你的意思是：
我们能互相学习：如何成为一个有用的社会人,以何种方式解决男女问题
We can learn 【how to become a useful members of society
and
ways to tackle the problem of men and women】
from each othe