In 4 qt. saucepan heat oil, add onions, celery and sweet potato. Cook over medium high heat, stirring occasionally, until onions are tender (3-5) minutes).
Add all remaining ingredients (EXCEPT) zucchini, Garbanzos beans and macaroni. Cook over high heat until mixture comes to a full boil (6 to 8 min.). Reduce heat to low. Cover and continue cooking for 15 minutes.
Stir in zucchini,Garbanzos beans and macaroni. Cook, uncovered, over medium heat, stirring occasionally, until macaroni is done and zucchini is tender (8 to 10 minutes).