It was Benazir Bhutto former Pakistan prime minister was leaving the rally(集会) that the

问题补充：

It was Benazir Bhutto, former Pakistan prime minister, was leaving the rally(集会) that the suicide bomb happened, the world felt sorry.

A. when; for which

B. as; which

C. since; for which

D. after; which

答案：

(答案→)A. when; for which

B. as; which

C. since; for which

D. after; which

解析：本题是把状语从句放到了强调结构里来考查，第一个空是由when引导的时间状语从句。第二个空是考查非限制性定语从句，考查到了定语从句里的“介词+which”的用法，里面含到了be/feel sorry for …。