A:1个
B:2个
C:3个
D:4个
看图读一读填空,把句子代码填在正确的横线上。
A. There's a blackboard in it. There are eighteen desks and eighteen chairs in it.
B. There are three books in it. C. There's a ruler. D. There's a big library.
“公天下”变成了“家天下”的开始是在( )