Question

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

Answer 1

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