Quick Italian Spaghetti

In a large skillet, cook beef and onions over medium heat until meat is no longer pink; drain. Add the tomato sauce, sugar, Worcestershire sauce, salt and pepper. Bring to a boil. Reduce heat; cover and simmer for 10 minutes. , Add olives; simmer 5 minutes longer. Spoon over spaghetti; sprinkle with cheese and bacon bits if desired.