Boys and girls, welcome to my new classroom. It's very big. The door is green. And there are three windows in my classroom. They are yellow. There is a picture on the wall. There are fifty-five desks in my classroom. And there is a big teacher's desk here. Look! A TV is on the wall. We can watch TV after class. 

1.My classroom is big.

A T（正确）

B F（错误）

C

D

解析：选A。

2.The door is yellow.

A T

B F

C

D

解析：选B。

3.The windows are green.

A T

B F

C

D

解析：选B。

4.There are forty-five desks in my classroom.

A T

B F

C

D

解析：选B。

5.We have a picture in our classroom.

A T

B F

C

D

解析：选A。