It was ________ Benazir Bhutto, former Pakistan prime minister, was leaving the rally(集会) that the suicide bomb happened, ________ the world felt sorry.
I asked you ________ my dictionary—now I can’t find it.
---Why not go out for a walk on such a sunny day? ---______ great.
______ ,all the students have covered 5 kilometers and no one quit on the half way.
It ________ last night_____ Tom saw an interesting film in Dongfeng Cinema.
Only an hour ago ________ out why he was absent.