找出下面三个单词中与其他两个不同类的那个单词，将其正确的序号填入题前括号内。
（1）A. pen B. pencil C. leg
（2）A. eye B. mouth C. teacher
（3）A. pencil B. Chinese C. English
（4）A. table B. bag C. chair
（5）A. cat B. eraser C. Dog
Mary often goes to school _________ his father’s car .
| A．with | B．in | C．on | D．by |
You must wait ________ the green light .
| A．in | B．to | C．for | D．with |
Do you help you mum _______ the housework?
| A．doing | B．does | C．with | D．and |
Is your little sister getting up?
_____No, she ________ .
| A．isn’t | B．doesn’t | C．don’t | D．can’t |
He _______ never late for school .
A.be B.is C.are