Question

—Is Bohai Bridge open to the public yet?

—Yes. It ______ for almost one and a half months.

　 A. has opened　 　　 B. has being opened 　 C. has been open　 D. was open

Answer 1

 C

解析:现在完成时的被动语态。根据句意：渤海大桥已经被开放一个半月了。be open为延续性动词，后接时间段。