我八岁了。

I'm ___eight years old.

6，7，8，9，10

___six, ___seven, ___eight, ___nine, ___ten

我的弟弟今年八岁了。

My younger brother is ___eight years old.

我们邀请了一个八岁的孩子来参加晚宴。

We invited an ___eight-year-old to the dinner party.