1 - I often eat fast food. I eat fast food only when I have a free time. I don't eat a lot of fast food, because I want to be fit. For example, I eat pizza at the weekend. I eat fries once a week.
2 - This is a long, long story. I started learning English when I was at kindergarten. I found that English is easy. Primary school passed by, and I was a fluent English speaker. Today I'm 19 years old and I can still speak in English very well. To impress my English speaking skills, I started watching original films in English, I listened to English songs, to memorize the lyrics, and I studied new English words.
3 - Yes, I would love to live in the USA. It's a country of my dreams! This is an American dream! USA and American culture inspired me so much. When I was a teenager, I told myself that I would love to live in the USA. I want to feel the culture. I want to do something fun. I want to be famous in the USA. And all of my dreams would come true.
