Since we have failed many times, we should think of a new approach the problem.
Ladies and gentlemen, please fasten your seat belts. The plane _______.
I _______ in London for many years, but I’ve never regretted my final decision to move back to China.
I was giving a talk to a large group of people, the same talk I _______ to half a dozen other groups.
“You’ve left the light on.” “Oh, so I have. _____ and turn it off.”
He has changed a lot. He _______ not what he _______.