听下面一段对话，回答以下小题。
【小题1】Why is Joe’s bike upside down?

A．He keeps it that way.

B．He is checking it.

C．He had an accident.

【小题2】How often does Joe oil his bike?

A．Once a week.

B．Once a month.

C．Once a year.

【小题3】Which part of the bike does the man say needs changing most often?

A．The seat.

B．The chain.

C．The wheels.