become的过去式和过去分词怎么写?

become的过去式became； 过去分词become；

v.开始变得;变成;适合(某人);与…相称;使(人)显得漂亮;使好看；

例句

The environment has become a very hot issue.

环境已成为很热门的话题。

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。

The Internet has become part of everyday life.

互联网已成为日常生活的一部分。

It soon became apparent that no one was going to come.

很快就很清楚，没人会来。

One of the panels had become detached from the main structure.

一块镶板已从主体结构上脱落。

The bill will become law next year.

该议案将于明年成为法律。