This isn't ______ shirt. ______ is white.

[    ]

There are (有) three children in the room. ______ is a boy, ______ two are girls.

[    ]

　　A. One, the other　　 B. The one, the other

Only Xiao Lin is in the classroom.

Where are ______ students?

[    ]

They have twenty-six desks in the classroom. One is for the teacher, ______ are for the students. 

[    ]

I have two pencils. One is red, ______ is blue.

[    ]

There are (有) two dictionaries on the teacher's desk. One is thick, ______ is thin.

[    ]

There is a blackboard ____ the classroom and another one ____ the classroom.

[　　]

A. in the front of, at the back of

B. in the front of, at back of

C. in front of, at the back of

D. in front of, at back of

--- Who is your ________?

--- Li Lei is.

[　　]