单项选择题
M: Hello, this is Tom. Who’s that W: Hello, Tom. This is Mary speaking.
A．He is calling Mary. B．He’s asking Mary for help. C．He is answering the phone from Mary.
A．He has to find two jobs to support himself. B．He can’t decide whether to take a science course or not. C．He can’t study full time this year.
A．Look for another cigarette. B．Repeat the question. C．Start smoking.