TOEFL Listening: TPO-TOEFL听力TPO - U5G73KK18J15D687R$

Why is the student unable to write about the painting by Van Gogh? A. It is not on the list of approved paintings that the professor provided. B. It is not available for the student to study in person. C. The student does not have enough background knowledge to write about it. D. Another student has already chosen to write about it.