单项选择题A.The bookstore pays 50% of their original value for the books if the professor changes texts.B.The bookstore pays 50% of their original value for the books in good condition.C.The bookstore pays 50% of their original value for the books marked up.D.The bookstore pays 50% of their original value for the books if a new edition comes out.
单项选择题A.The train is crowded.B.The train is late.C.Tire train is empty.D.The train is on time.