›[C]There are so many uses for computers in the classroom.[U]We need to look closely at our energy use and its environmental impact.[U]Do you have any use for these old magazines?[U]After her stroke, she lost the use of her left arm.›If someone or something is of no use, it cannot be of help: [U]There’s no use paying for a permit if you won’t need it.[U]He was of no use to us because he couldn’t work every day.