选出不同类的单词，在下面画横线。)
(1)A.motherB.brotherC.teacher
(2)A.duck?B.deskC.chair
(3)A.planeB.pearC.peach
(4)A.smallB.giraffeC.short
(5)A.fifteen B.twelveC.friend
It ________ so fat.
A. am B. isC. are
——_____is that woman？
——She is my teacher.
A.WhoB.What C. How
Who is that boy? He is my_____ .
A.father B. brother C .sister
The elephant has a _____ nose.
A.long B. shortC. thin