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

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：考查动词的时态和语态。根据上文可以推断（当时）阅览室正在装修之中，应该用过去进行时的被动语态。句意：放学后我们去阅览室想做些阅读，结果被告知阅览室正在装修之中。