3. 1) May is the fifth month of the year. 2) July is the seventh month of the year. 3) August is the eighth month of the year. 4) October is the tenth month of the year. 5) December is the twelfth month of the year. 4. 1 \ one \ the first 9 \ nine \ the ninth 13 \ thirteen \ the thirteenth 15 \ fifteen \ the fifteenth 18 \ eighteen \ the eighteenth 20 \ twenty \ the twenties 29 \ twenty nine \ the twenty ninth.