—I’m terribly sorry that I made your table cloth dirty. —___________.
After decades of effort, the city is still trying to _____ how to stop smoking in public places.
Lawmakers have approved the measures_____ protecting the personal information of Web users.
After the war, a new school building was put up ______there had once been a theatre.
Michelle Obama said, “For Barack, success isn't about how much money you make; it's about the______ you make in people's lives.”
Look at the trouble I am in! _______I had followed your advice.