As soon as she entered the room the girl caught sight of the flowers by her mother.A. bu

问题补充：

As soon as she entered the room, the girl caught sight of the flowers by her mother.

A. buying

B. being bought

C. were bought

D. bought

答案：

A. buying

B. being bought

C. were bought

(答案→)D. bought

解析：本题修饰名词flowers为买的过去分词bought，表示被动的含义，故本题选D。