For stir-fry, place 1 tablespoon of oil, garlic, ginger and sliced scallions in pan. Cook for about 30 seconds.
Add half of the vegetables, and 2 tablespoons soy sauce and cook for about 4 minutes. Transfer to the serving dish.
Again, add 1 tablespoon of vegetable oil, remaining vegetables, and 2 tablespoons of soy sauce, and cook for 4 minutes. Be sure to reheat pan between batches.
Toss the meat and vegetables together in the serving dish, and serve with steamed white rice.