This is a new classroom. It’s very big. The walls are white. The pictures are on the wall. The floor is clean. We have twenty desks and nineteen chairs. They are blue. The teacher’s desk is near the window. A new computer is on it. The windows are blue. You can see six green lights. I like the classroom.

1.The classroom is very __________.

A dirty

B clean

C small

D big

解析：选D。D细节理解题。根据第二句“I’s very big.”，教室很大。故选D。

2.There are __________ desks in the classroom.

A 20

B 19

C 18

D 17

解析：选A。A细节理解题。根据第六句“We have twenty desks and nineteen chairs.”可知，有20个书桌。故选A。

3.__________ is on the teacher’s desk.

A A TV

B A pen

C A computer

D A book

解析：选C。C细节理解题。根据倒数第四句“A new computer is on it.”可知，老师办公桌上有电脑。故选C。

4.The windows are __________.

A yellow

B blue

C black

D white

解析：选B。B细节理解题。根据倒数第三句“The windows are blue.”可知，窗户是蓝色。故选B。

5.There are __________ green lights in the classroom.

A 4

B 5

C 6

D 7

解析：选C。C细节理解题。根据倒数第二句“You can see six green lights.”可知，有六个绿灯。故选C。