找出不同类的单词，把序号写在提前的括号内。
( )（1）A. skirt B. T-shirt C. book
( )（2）A. grandpa B. sister C. teacher
( )（3）A. he B. she C. mother
( )（4）A. red B. colour C. yellow
( )（5）A. he B. is C. are