照样子,写出下列各基数词的序数词。
one first (1st)
1.two__________(_________)
2.three___________(_________)
3.four __________ (_________)
4.five ___________(_________)
5.six__________(_________)
6.seven___________(_________)
7.eight __________(_________)
8.nine ___________(_________)