- 搜标题
- 搜题干
- 搜选项
单项选择题
M: How much did you pay for this used book?
M: How much did you pay for this used book?
W: I paid 4 dollars--half of its usual price.
Q: What is the usual price of the book?（）
A．4 dollars.
B．7.5 dollars.
C．12 dollars.
D．8 dollars.
