单项选择题
—— I didn’t know this was a one-way street, sir. —— （）.
A．It’s different. B．How do you do C．How dare you say that D．Sorry, but that’s no excuse.
A．Go ahead B．Thank you so much C．Don’t worry D．You are welcome
A．Sure, please B．Thank you so much C．It’s six o’clock D．Yes, I can