问题
选择题
Father was very angry because his favorite glass ________ by his pet dog.
A．broke
B．has broken
C．was broken
D．has been broken
答案
答案：C
题目分析：句意：父亲非常生气，因为他最喜欢的玻璃杯被他的宠物狗打碎了。主语是谓语动词的承受者用被动语态，其结构是be+done，根据句意可知事情发生在过去，故选C。