单项选择题
A．Who are you B．Ultimate Computers. C．Who is speaking D．I'm the secretary.
A．It's a difficult decision to make. B．Cigarettes-addiction is dangerous. C．He's a cigarette addict. D．I wonder how long it will last this time.
A．No, the blue one is prettier. B．Yeah... but the blue one would look better on you. C．I think otherwise. D．I don't think I agree with you.