Question

________ born in Chicago,the author is most famous for his stories with backgrounds in Washington．

1. A.
   Although
2. B.
   Since
3. C.
   As
4. D.
   When

Answer 1

A
解析：本句中省略了“he was”。状语从句常可用when,if,although,however,while等连词直接加上分词或形容词表示，而省略句中的其他成分。