The town official broke ________ for working over time in the search for the trapped people after the earthquake.

 He put on his tie, took one last look at the room and_____________  walked out of the door.

These natural parks are very important for preserving many animals, which would ______ run the risk of becoming extinct(灭绝的)．

– I’m sorry for what I said. -- Forget it, I can’t remember _________.

I caught the last bus from town, but Harry came home___________ that night.