--- What on earth is that noise?
--- Oh, the next flat ．
A. was decorated
B. was decorating
C. is being decorated
D. is to be decorated
网友回答
A. was decorated
B. was decorating
(答案→)C. is being decorated
D. is to be decorated
解析：考查时态。根据句意可知，下一层楼正在被装修，故用现在进行时的被动语态，选C。