There is one mistake in each sentences. Underline and correct the mistake

There is one mistake in each sentences. Underline and correct the mistake.
1. A lot of people are good artists and they are successfully in life
2. Music promote creativity, social development, and personality.
3. The ManaLisa is a portrait paint by the Italian artist Leonardo da vinci
4. Your violin is the same with the one I've just bought
5. The weather of Hong Kong is different from that of Canada's
6. How long do you go to the movies? - Twice a month
7. The weather today is not so hot as it is yesterday