Not until this week were they aware of the proble

Not until this week were they aware of the problems with the air-conditioning units in the hotel rooms.

A．这个星期旅馆里的空调间出问题了，他们没有意识到。

B．直到这个星期他们才意识到该修理旅馆房间里的空调了。

C．直到这个星期他们才知道旅馆房间里的空调设备有问题。

D．他们查不出旅馆房间内空调的故障，这个星期会请人来检查。