按要求写单词。
(1) child (复数) ____________ (2) teachers (名词所有格)____________
(3) good (副词) ____________ (4) they (物主代词)_____________
(5) write (同音词)____________ (6) Canada (缩写形式)___________
(7) America (形容词)____________ (8) cheap (反义词)______________
(9) teach (第三人称) ____________ (10) bad (比较级)_______________