单项选择题
A．At a bus station. B．21 dollars. C．At a railway station. D．At an airport.
A．To do some shopping in a supermarket. B．To go to work in a supermarket. C．To go to a bank to withdraw some money. D．To ask the way to the bank.
A．Yes, of course. B．How do you do C．The same to you. D．Fine, thank you.