The grpes are sour.(改为一般疑问句)
The grapes are sour.改为一般疑问句并作否定回答
The orange is sour.(改为一般疑问句)
The strawberry tastes sour.(一般疑问句)
The bears are fighting.改为一般疑问句
The are playing football改为一般疑问句
The boys are here改为一般疑问句
The apples are sweet.改为一般疑问句
the books are new(改为一般疑问句)
The orange is sour改成否定句,一般疑问句,肯定回答,否定回答,对sour提问
The keys are on the desk(改为一般疑问句)
The books are in the bookcase.(改为一般疑问句)
The CDs are on the desk.改为一般疑问句