He ran all the way to the station only _______________the train had already left.

smile can help us _____________ difficult situations and find new friends in a world of strangers.

It is good manners to eat up_______is left in yourplate.

You were not in when I came over to your house-Oh, I ____________ for a friend from England at the airport

These new types of energy from the sun, wind and water cost very little and will never ________.