问题描述：
无聊ing..发个简单问题~第一个答对的采纳~
把单数句变成复数句~
This is a book.
It is a desk.
What's this?
This is a foot.
Is this a map?
Yes,it is
把复数句变成单数句~
These are chair.
They are apple.
What are these in English?
答：What __ __ in English?
Are they books?
把单数句变成复数句~
This is a book.
It is a desk.
What's this?
This is a foot.
Is this a map?
Yes,it is
把复数句变成单数句~
These are chair.
They are apple.
What are these in English?
答：What __ __ in English?
Are they books?
问题解答：
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