5（）

单项选择题When you buy a ticket, the agent promises to give you fair information on tickets to help you （）

A．get the most appropriate ticket
B．purchase a ticket in advance online
C．pay the right fair to the on-board staff
D．collect the ticket from the ticket selling machine

单项选择题When you take a taxi, you d better （）

A．buy a monthly pass
B．ask about the fare first
C．agree on the amount of the tip
D．pay by the exact change in coins