Question

i+am+seven+years+old改为特殊疑问句？

Answer 1

I am seven years old. 我七岁了。
改为特殊疑问句答案有两个：
1.Who is seven years old? 谁七岁了？
2.How old are you? 你多大了？

Answer 2

i+am+seven+years+old.
改为特殊疑问句：
How old are you?
你几岁了？