помогите.The one thing ( 1)persons /people around the world know about

Помогите.
The one thing ( 1)persons /people around the world know about Manchester in England is that it's the home of Manchester United football club. But is Manchester also(2) a /an important place in the world of classical music? Yes, (3) is/ it is. There (4) 's/ are a famous school in the city centre called Chetham's School of Music, or "Chets' for short. Chets is a specialist school for talented young musicians from around the UK. Can boys and girls go there? Yes, (5) he/ they can. It's a mixed school and it (6) 's /'ve got around 290 students between the ages of eight and eighteen. They study academic subjects like maths, English and ICT, but they also study music for three hours a day. Students (7) play /plays musical instruments, like the piano or violin. For talented singers, one of their instruments (8) can/ cans be their voice. After leaving chets, students often go on to study at the famous Royal Northern College Music in Manchester. Many of (9) it's/ its students become professional musicians Manchester has got an orchestra, too, called the Hall. It (10) doesn't /don't perform just in Manchester, it performs around the world. There's also the Hall Youth orchestra. That's for young people in the region who (11) can/ can't play a musical instrument, but don't go to a music school like Chetham's. Its members play (12) brilliantly/ brilliant.