Wo sind die Fehler?

Hey also ich hab hier mal paar Sätze wo ich die Fehler raussuchen muss und sie verbessern muss. Wäre sehr nett wenn mir jemand helfen könnte ;)

Danke


1. China have paid a high price for its economic boom.

2. According to Kahn, hundreds of thousands of Chinese workers are dying every year because of pollution.

3. China manufactures hi-tech goods for the global market, but his own electricity still comes from rusty, dusty old coal-fired power plants and from oil.

4. The nation burns about 26 per cent of the world`s coal production, and Western tourists have not enjoyed the smog in Beijing during the 2008 Olympic Games.

5. In 2007, China produced 1.3% more carbon dioxide as the USA.

6. China`s communist leaders know that their dirty old system wasn`t going to work forever, so they are spending billions of dollars on renewable energy projects.