After school we went to the reading-room to do some reading only to be told that it .A. w

问题补充：

After school we went to the reading-room to do some reading, only to be told that it .

A. was decorated

B. had decorated

C. had been decorating

D. was being decorated

答案：

A. was decorated

B. had decorated

C. had been decorating

(答案→)D. was being decorated

解析：考查时态。句意：下课以后，我们去了阅览室看书，结果却被告知阅览室正在被装修。根据句意是指在我们去阅览室这个过去的时间正在发生的事情，故使用过去进行时。阅览室正在被装修，又要使用被动语态的形式。故D正确。