The church tower which __________ now will be open to tourists soon. The work is almost finished.

The church tower which __________ now will be open to tourists soon. The work is almost finished.
A. has built B. has been built C. is building D. is being built
【答案】D
【解析】
【详解】考查被动语态和主谓一致。句意：正在修建的教堂塔不久将对游客开放。这工作已基本完成。根据时间状语now可知，空处谓语动词需用现在进行时态，所以排除选项A和B，因为教堂塔是被修建，所以空处定语从句谓语动词需用现在进行时态的被动语态：be being done，先行词是The church tower，单数，所以be动词需用is。故选D。