Insert articles where necessary. 1. people can’t live without music. 2. to play musical instrument is great pleasure. 3. my sister enjoys playing piano. 4. if person wants to play guitar well, he has to practise it often. 5. happiness is often the product of honesty and hard work. 6. flood did a lot of .damage to monuments of city. 7. pollution is one of greatest problems facing mankind. 8. don’t eat in this restaurant. food is awful there.

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