become的过去式： became；过去分词： become.
become：v.开始变得;变成;适合(某人)
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？
My parents had fixed ideas about what I should become.
父母对我应该成为什么样的人有定见。
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