You can’t imagine the difficulty he _____ onto the cliff and saving the boy in trouble.
Convenient ___private cars are for us, they may also cause traffic accidents and pollution.
You would not have made so silly mistakes , but it is a pity you _______ my advice.
Some retired people have nothing to do. They often get together and ___for hours talking about their past experiences.
The British are proud of the 2012 Olympic Games_______ in London.
—What does the sign over there read?—"No person_______ smoke or carry a lighted cigarette, cigar or pipe in this area."