双语例句：
Students should aim to become more independent of their teachers.
学生应该努力逐渐减少对老师的依赖。
I see he's become a family man.
我发觉他已变得很恋家。
The environment has become a very hot issue.
环境已成为很热门的.话题。
He became very weak towards the end of his life.
他临终时很虚弱。
What became of that student who used to live with you?
以前和你住在一起的那个学生后来怎么样了？
