Everyone here will thank the firefighter for the things they have done to prevent fires______the environment safer.
In some places, red indicates sadness, as in South Africa, _______ it is the color people wear when they mourn.
The fans _____the names of the band members when they appeared at the airport.
He is really nervous. He ______back and forth all the night waiting for the results.
Mary _______as a secretary in this company for twenty years and now she stays at home taking care of her own garden.
The company invested 80 percent of the money in training the staff, the rest of which ____saved for other purposes.