题目内容
C Think and write (写出序数词和它们的缩写形式)
1 one first 1st 2 two
3 three 4 four
5 five 6 six
7 seven 8 eight
9 nine 10 ten
11 twelve 12 fifteen
13 eighteen 14 twenty
15 twenty-one
16 twenty-two
17 twenty-three
2 second,2nd 3 third,3rd 4 fourth,4th 5 fifth, 5th
6 sixth,6th 7 seventh,7th 8 eighth,8th 9 ninth,9th
10 tenth,10th 11 twelfth,12th 12 fifteenth,15th
13 eighteenth,18th 14 twentieth,20th 15 twenty first,21st 16 twenty-second,22nd 17 twenty-third,23rd
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