In medium bowl, combine flour, cinnamon, salt, baking soda and cloves. In large bowl, beat eggs with electric mixer on medium high speed until they turn a light yellow color. In medium bowl, whisk together sugar, oil, pumpkin, milk and vanilla. Gradually add pumpkin mixture to eggs; beat thoroughly. Add flour mixture; mix well. Stir in apples and, if desired, nuts. Spoon into prepared pan.