把下列句子该形式改为复数形式There is a knife in the box.Our teacher often
把下列句子该形式
改为复数形式
There is a knife in the box.
Our teacher often tells us a story.
改为否定句
Yell him the news.
He does some reading every day.
改为一般疑问句
There is some fruit juice in the glass.
He has to stay here.