He wrote a letter ______ he explains what had happened in the accident.

__ in the warm sunlight, I soon fellasleep on the sunny beach.

Do you know _________ ——Yes, I do. He went by skateboarding!

Millions of youngsters across Europe could suffer ____ hearing loss after five years if they listen to MP3 players at too high a volume for more than five hours a week, EU scientists warned.

With trees and grass__________39.6% of the urban area，the city has taken on a new look.