Crockpot Cantonese Dinner

1 1/2 lb pork steak " thick cut into strips
2 Tbsp oil
1 onion large, sliced
1 green pepper small cut into strips
1 4 oz mushroom, drained
1 8 oz tomato sauce can
3 Tbsp brown sugar
1 1/2 Tbsp vinegar
1 1/2 tsp salt
2 tsp Worcestershire sauce

Brown pork in oil in skillet. Drain on double paper towel. Place pork strips and all remaining ingr. into crock pot. Cover and cook on low for 6 to 8 Hr (high 4 hr) Serve over hot fluffy rice.