选出各组中不同类的一项。
(1)A.one B.mother C.father
(2)A.two B.seven C.your
(3)A.grandma B.grandpa C.Miss
(4)A.who B.this C.what
(5)A.my B.me C.your
当别人问你问题你不知道时，你应说：________
A．Sorry.I don't know.B.OK. C.Great.
当你想告诉别人你来自中国时，你应说：________
A．He is from Chinese.B.I am from China. C.I am from Canada.
当你饿的时候，你应说：________
A．I am fine. B．I am hungry. C．What is this?
你们班来了一位新同学，你想把他介绍给大家，你应说：________
A．He is Tom，this is my new classmate.
B．This is Tom，our new classmate.
C．We have a friend.
选出错误的选项并在横线上改正。(8分)