Question

When ________ what made him a popular person, he said it was his personality

1. A.
   asking
2. B.
   asked
3. C.
   being asked
4. D.
   ask

Answer 1

B
考查省略句，当主从句的主语一致时，可以省略从句的主语和be动词，when asked="when" he was asked，句意是：当有人问他，是什么使他成为受欢迎的人，他说是因为他的个性。选B。