题目内容

1.写出下列序数词的缩写形式。

(1) first second third  

 fourth fifth sixth seventh  

 eighth ninth tenth

(2) twelfth fifteenth  

  eighteenth   twentieth

(3) twenty-first twenty-second  

  twenty-third

1. (1) 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th

(2) 12th, 15th, 18th, 20th

  (3) 21st, 22nd, 23rd

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