Why do I have to get Professor Brown’s signature f

单项选择题

Exercise: Listen to the following short statements and then choose one of the answers that best fits the meaning of each statement. You will hear the statements only once.

Why do I have to get Professor Brown’s signature for taking the seminar

A. Because I haven’t taken the introductory course.
B. Because the seminar is focused on complicated questions.
C. Because professor Brown is going to lead the seminar.