选择下列单词中不属于同一类的一项，将序号填在括号里。(10分)
（1）A.big B.small C.boy
（2）A.desk B.egg C.chair
（3）A.fish B.elephant C.apple
（4）A.he B.dog C.she
（5）A.hello B.ten C.two
( ) The doctor and writer________in Harbin last year.
| A．is | B．are | C．was | D．were |
( ) My uncle came here _______the evening of October 7th.
| A．on | B．in | C．at | D．for |
( )—Is this your backpack?
—Yes, _______.
| A．This is | B．it is |
| C．it’s | D．it isn’t |
( )—What’s this?
—It’s_______.
| A．key | B．keys | C．a key | D．a keys |
( )._______, Linda. What’s this in English?
| A．Excuse me | B．Thank you |
| C．I’m sorry | D．Excuse |