Double-shelled beef and bean tacos

Beef second courses Mexican cuisine

1 pound Lean ground beef 1 cup Onion 1/2 cup green pepper 1 10-oz. jar taco sauce 1 tablespoon taco seasoning 1/2 tablespoon Chili Powder 1 teaspoon Sugar 8 flour tortillas (small-size) 1 15-oz can refried beans can 8 taco shells 2 cups iceberg lettuce 1 cup fresh tomato 1 cup sharp Cheddar cheese