Задать вопрос сколько лет к следующим предложениям: i am 20 years old. you are 12 years old. he is 12 years old. we are 50 years old. she is 70 years old. they are 5

How old are you? I am 20 years old.
How old am I? You are 12 years old.
How old is he? He is 12 years old.
How old are you? We are 50 years old.
How old is she? She is 70 years old.