Question

________ the important documents were needed_______

1. A.
   Where; finding
2. B.
   What; found
3. C.
   When; to find
4. D.
   When; to be found

Answer 1

A
试题分析：本句可改写为：we needed finding the important documents in some places.将其变成被动语态，再就地点状语提问就得到：the important documents were needed finding in some places.----where the important documents were needed finding?由此可知选A。
考点：考查句子结构及非谓语动词的用法。