单项选择题
Questions 13 to 16 are based on the conversation you have just heard.
A．He lost his mother. B．He was unhappy in California. C．He missed his aunt. D．He had to attend school there.
A．Interrupt him whenever he detected a mistake. B． Focus on the accuracy of the language he used. C． Stop him when he had difficulty understanding. D．Write down any points where he could improve.
A．The printing on her T-shirt has faded. B．It is not in fashion to have a logo on a T-shirt. C．She regrets having bought one of the T-shirts. D．It is not a good idea to buy the T-shirt.