The fact has worried us more and more students have got near-sighted.

“How about John?”“My uncle ______a good student．”

Do you know sound travels very fast—-Yes. But light travels _______ sound.

People are encouraged to speak openly, butcareless words are ____ to hurt others’ feelings.

–-Why are you so crazy about music–- Because I can always find in music _____ peace that is missing in _____ world full of challenges.