找出不同类的单词,将序号填入括号内。
( ) (1)A cow B duck C robot
( ) (2) A twelve B lunch C seven
( ) (3)A sit B under C sleep
( ) (4) A bag B milk C cake
( ) (5) A ball B pen C ruler
( ) (6)A shout B talk C pig
( ) (7)A chair B look C door
( ) (8)A apple B pear C behind
( ) (9) A under B on C bed
( ) (10)A these B those C what