There is a police car in front of the house of our neighbour's. do you think ？A. What；ha

问题补充：

There is a police car in front of the house of our neighbours. do you think ？

A. What；has happened

B. What；of happening

C. What；of being happened

D. Whatever；of happening

答案：

(答案→)A. What；has happened

B. What；of happening

C. What；of being happened

D. Whatever；of happening

解析：do you think可理解为插入语.