In a Dutch oven, brown meat in oil over medium heat. Add tomatoes, tomato juice or water, onions, garlic, pepper, and salt. Bring to a boil; reduce heat and simmer for 1 hour. Add potatoes, carrots, corn, green beans, peas and celery. Cover and simmer for 30 minutes. Add squash; simmer 10-15 minutes longer or until meat and vegetables are tender. Stir in parsley and sugar. You can substitute or leave out any of the vegetables, or use canned or frozen, instead of fresh.