1 IW. Insert appropriate articles where necessary looking through the Grammar Focus. 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 regularly 5. ... happiness is usually 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. . .​