In A Large Kettle Over Medium Heat, Saute Onion In Oil Until Tender, About 4 Minutes. Add The Next Six Ingredients; Cook Until Meat Is No Longer Pink. Add Tomatoes, Broth, Zucchini And Mixed Vegetables; Cover And Cook On Low Heat For 5 Minutes. Add Beans, Macaroni, Vinegar, Salt If Desired And Pepper; Simmer For 3-4 Minutes Or Until Heated Through.