Stir-Fried Beef 'n' Beans

1/4 cup cornstarch
1/2 cup soy sauce
2 T water
1 tsp ground ginger
4 garlic cloves, minced
4 T veg. oil
1 lb boneless beef sirloin steak cut into 1/4 inch strips
1/2 fresh green beans cut in half
1 tsp sugar
1/2 tsp salt
Hot cooked rice

In a bowl, combine the cornstarch, soy sauce, water, ginger, garlic and 2 T oil until smooth. Set aside 1/2 cup. Pour the remaining marinade into a large resealable plastic bag; add the beef. Seal the bag and turn to coat; ref. for 25-30 min.
Drain and discard marinade from beef. In a wok or skillet, stir-fry beef in remaining oil for 4-6 minutes or until no longer pink. Remove and keep warm. In the same skillet, stir-fry beans, sugar and salt for 15 min. or until crisp-tender. Stir in the beef and reserved marinade. Bring to a boil; cook and stir for 1-2 min or until thickened. Stir over rice.