我侄子今天21岁了。

My ___nephew is 21 today.

我和我的丈夫、两个姐妹以及一些侄女和侄子一起去了。

I went with my husband, my two sisters and some nieces and ___nephews.

他为他侄子的成就感到非常自豪。

He is very proud of his ___nephew's achievements.