他申请成为美国公民。

He applied to become an American ___citizen.

我是美国公民，因为我母亲来自纽约皇后区。

I'm an American ___citizen because my mother comes from Queens, New York.

她持有英国护照，因为她是联合王国的公民。

She holds a British passport as she is a ___citizen of the United Kingdom.