每个美国公民如果想维护自己的公民权利，必须要做哪四件基本的事？

What are four basic actions every U. S. citizen should do in order to retain citizenship?

youdao

每个美国公民如果想维护自己的公民权利，必须要做哪四件基本的事？

What are four basic actions every U. S. citizen should do in order to retain citizenship?

youdao