单项选择题
Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions.Now, listen to the passage.
Which course(s) does or do NOT require enrolment beforehand（）
A．Conversation class. B．Writing skills class. C．Examination skills class. D．All of the three courses.
单项选择题 Which of the following details about the changing rooms is NOT correct（）
单项选择题 From the conversation we know that Mark Adams comes from （）
单项选择题 I must leave now（） if you want that book I'll bring it next time.
