2. 外语
  3. All the schools ______ because of the earthquake, students and teachers had to go back home.

All the schools ______ because of the earthquake, students and teachers had to go back home.

admin2012-08-05  111
问题 All the schools ______ because of the earthquake, students and teachers had to go back home.
选项 A、having destroyed
B、were destroyed
C、having been destroyed
D、have been destroyed
答案C
解析 句子结构题。空格所在部分并没有出现关联词，这说明逗号部分只能是句子中的某个成分，不可能是一个单句，因而排除B 和D 。再根据destroy和schools之间的动宾关系，可以判断此处只能用被动形式，可见C 是答案。实际上，此处用了独立主格结构作状语，表示原因。
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