单项选择题
M: My library book is eight days overdue. Can you tell me how much I owe you W: 8 cents a day. M: Ok. Here’s the money.
A. 64 cents. B. 18 cents. C. 80 cents. D. 16 cents.
A. About a hundred years. B. About fifty years. C. Only recently. D. About thirty years.
A. 12,000. B. 700,000. C. 50,000. D. 20,000.