A noise was coming from _______， and after a while a man in black came downstairs and went away in the street.

Tom was so wild about computer games that he would stay online for ten hours _____every day

They did the experiment in the lab _______ was named after Professor White

When I was twenty, I had to ___ before graduation and work in a clothes shop to help support my family.

Clean water ______the village people in the flooded area.