--- He looks so tired. What’s wrong? --- Nothing serious. He just stayed up last night, ___________his papers.
________ at the cafeteria before, Tina didn't want to eat there again.
The traffic problems we are looking forward to seeing ________ should have attracted the government's attention.
Jim was about to stand up when he saw something ________ near his feet. It's a snake!
David threatened ________ his neighbour to the police if the damages were not paid.
—Robert is indeed a wise man.—Oh, yes. How I regretted ________ his advice.