Cook Pasta According To Package Directions. Meanwhile, In A Large Nonstick Skillet, Stir-Fry Beef In Oil For 4-5 Minutes Or Until Browned. Add Onion And Green Pepper; Cook And Stir For 2 Minutes. Stir In Tomatoes, Water, Broth, Vinegar And Seasonings. Bring To Boil. Reduce Heat; Cover And Simmer For 15 Minutes. In A Small Bowl, Combine Flour And Cold Water Until Smooth. Add To Skillet. Bring To A Boil; Cook And Stir For 2 Minutes Or Until Thickened. Drain Pasta; Stir Into Beef Mixture.