It was ________ Benazir Bhutto, former Pakistan prime minister, was leaving the rally(集会) that the suicide bomb happened, ________ the world felt sorry.
Men are more suited to occupational environments __________ require decisive action whilewomen are better at jobs __________ a considered approach is most important.
The meaning of a word can be guessed according to the context, so you will not __________ refer to a dictionary the next time __________ you come across a new word.