is no wonder that the building is now; it was so big a fire last night.A. It; in ruinsB.

问题补充：

is no wonder that the building is now; it was so big a fire last night.

A. It; in ruins

B. That; in ruins

C. There; in ruins

D. It; in ruin

答案：

(答案→)A. It; in ruins

B. That; in ruins

C. There; in ruins

D. It; in ruin

解析：考查固定句型。It is no wonder that...“难怪......”。It作形式主语，真正的主语是that引导的从句。句意“昨晚的火真大，难怪那栋大楼变成了废墟。”in ruins“变成废墟”。故选A。