I didn’t hear the phone. I ________ asleep.
When I approached to the subway entrance, an explosion occurred. This ___my first experience, I got into panic
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.