--- Tracy was in such a hurry ?
---I don’t know．She might have been running to catch the bus.
A. Why do you think
B. Why you think
C. Do you think why
D. Why not think
网友回答
(答案→)A. Why do you think
B. Why you think
C. Do you think why
D. Why not think
解析：do you think 作插入语，疑问词放在插入语之前。