请写出下列词的序数词。(24分)
（1）one________
（2）two________
（3）three________
（4）four________
（5）five________
（6）six________
（7）seven________
（8）eight________
_ _ tive
A.ca B.ic C.ac
sh _ _ t
A.orB.roC.au
sm _ _ t
A.urB.ouC.ar
st _ _ ng
A.or B.ro C.oo
根据单词的首字母及汉语提示补全单词。
(1)My sister is very c_________. She knows many things.
(2)My art teacher is not strict. He is very k_______.
(3)She often helps her mother do housework. She is very h_________.
(4)He is good at study, because he is h_________(辛勤的)
(5)Is he p________？（有礼貌的）