CHEESEBURGER PITAS
1 pound ground beef
1/2 cup chopped onion
1/2 cup chopped green pepper
1 cup cooked long grain rice
1 can (8 ounces) tomato sauce
2 teaspoons Worcestershire sauce
1/2 teaspoon salt
1/4 teaspoon pepper
2 cups shredded cheddar cheese
8 pita pocket halves