—______ your brother in the office?

—Yes, he is.

A. Is B. Are

C. Am D. Be

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Do you like listening to music? Do you often turn up the music when you’re using earphones? If so, your hearing may have been damaged(損壞).

The World Health Organization (WHO) is worried that 1.1 billion children and young people are damaging their hearing by listening to loud music. Nearly half the young people in developed countries may lose their hearing because of the "unsafe use" of music players, including smartphones. Loud music in nightclubs, parties and at sports also make it worse. The WHO advises young people to listen to music for just one hour a day. Dr. Etienne Krug told BBC: "What we're trying to do is to draw people's attention to a problem that is not talked about enough." He said it's easy to solve this problem.

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