—It smells terrible. What has happened here?—Look, there is a chemical factory_____ much waste gas.A. pour B. pouring C. poured
________ everybody is here, let’s begin our meeting.
It’s said that his father was attacked ________ a man ________ a knife.
________ are crazy about listening to pop music in their spare time.
--- Do you know ________? --- All of them ________ the museum.
Tom has ________ that he lives a happy life.