Vocabulary b: Write the next word. Example: first, second, third. 1) fifth, sixth, ___; 2) tenth, eleventh, ___; 3) eighteenth, nineteenth, ___; 4) twenty-ninth, thirtieth, ___; 5) January, February, ___; 6) March, April, ___; 7) May, June, ___; 8) September, October, ___.