Air bags for cars were invented _____ lives. Without them more people would be injured in car accidents.
_____, he talks a lot about his favorite singers after class.
Never before _______in greater need of modern public transport than it is today.
______ about wild plants that they decided to make a trip to Madagascar for further research
______, Carolina couldn't get the door open.
____ snacks and drinks, but they also brought cards for entertainment when they had a picnic in the forest.