about100housesweredestroyedandanother2500,or40percentofthecity'stotal,___inthe
earthquake.
AweredamagedBwasdamagedChaddamagedDdamaged
答案是选A,可是为什么不选D呢,不是说逗号连接两个句子,选A的话最后一句话缺主语,