单项选择题
M: How many students took the last English test W: 570 students took the exam, but half of them failed.
A.280. B.570. C.285.
A.He earned a great deal of money during the holiday. B.He had a busy holiday. C.He had a pleasant holiday.
A.No, she doesn’t. B.Yes, she does. C.She says it’ s too expensive.