Place broth in a large pot: bring to a boil. Add carrots and celery and cook for 2 minutes. Add mushrooms, broccoli and bok choy and cook for 2 minutes. Add wontons and cook for 3 minutes. Add green onions and cook for 1 minute.
Additional tips: you can cook the shrimp by adding it at the same time as the mushrooms. To prevent the broth from becoming cloudy cook the won-tons separately.