Fill in: for or sinceJohn and Norma have been married forsince 20 years. They have been living in New York forsince 2008. John has been working on Wall Street sincefor four years and he has made a lot of money forsince he started working there. Norma hasn't worked forsince they moved to New York but she has been writing a book sincefor the past two years. She has had a lot of spare time sincefor their son left home to work in France. Theis son has been working as an engineer sincefor four years. He has been interested in vehicles forsince he was a child and he has known sincefor years that his dream would come true.