Air bags for cars were invented _____ lives. Without them more people would be injured in car accidents.
When I was in the countryside, I ____ by the riverside every day.
The book has been translated into thirty laguages since it ____ on the market in 1973.
____ was a great disappointment to us ____Tony didn’t come to the party.
We ____ a word unless she asks us ____.
--- Do you have any fashion magazines? ---Yes, I have a lot and ____are bought by my older sisters.