They /ask /lock /door /before /leave/every d...

Câu hỏi: They /ask /lock /door /before /leave/every day.

A. They are asked to lock the door before they leaving every day. 

B. They asked to lock the door before leaving every day. 

C. They are asked to lock the door before leaving every day. 

D. They ask to lock the door before they leave every day.