[解析]
AC
M:What can I do for you?
W:I would like to use the copy machine.
M:The machine is over there.
W:Do I have to pay to use the machine?
M:Yes.
W:How much?
M:You need to pay 10 cents for a copy.
W:Could you show me how to use it?
M:The instructions are posted on it.It's easy for you to use after reading.
W:Thank you.