问题 填空题 写出下例各词的序数词。1. one _____________3. three _____________5. eight _____________7. twenty _____________2. two _____________4. five _____________6. twelve _____________8. sixty-two _____________ 答案 1. first 2. second 3. third 4. fifth 5. eighth 6. twelfth 7. twentieth 8. sixty-second