A.how old he was
B.how old was he
C.how old he is
D.how old is he
A.How old are you when you came to the U.S
B.How old were you when you came to the U.S
C.How old is you when you came to the U.S
D.How old did you come to the U.S
A.How do you do?
B.How old are you?
C.How are things with you, Jimmy?
D.Where are you from?