Ask questions with how come.
1. A: I forgot my birthday.
B:_________
your birthday? Nobody forgets their own birthday.
2. A: Jerry is not going to the concert.
B:________
to the concert? It took us hours to get the tickets.
3. A: Lauren doesn't have a cell phone.
B:_________
one? Everybody does.
4. A: Sorry, but I can't help you.
B:_________
me? You're my best friend.
5. A: The kids haven't arrived yet.
B:________
yet? They left home an hour ago.​