单项选择题
M: How much are the tickets please W: They are $3 each. Children can get it at half price. M: Fine, I would like three please. One adult and two children.
A.$3. B.$4.5. C.$6. D.$9.
A. One dollar. B. Two dollars. C. Three dollars. D. Four dollars.
A. Patient and doctor. B. Wife and husband. C. Waitress and customer. D. Secretary and boss.