there is a__in my study.there are many__on it.横线上填什么单词,并且单词的第一个字母是b

问题描述:

there is a__in my study.there are many__on it.横线上填什么单词,并且单词的第一个字母是b

There is a bookcase in my study.There are many books on it.
有一个书架在我的书房里.书架上有很多书.