问题描述：
there are so many things in the desk ,some books________.
there are so many things in the desk ,some books ________.
A:included B ,including c.include
这个选择A.为什么?
there are so many things in the desk ,some books ________.
A:included B ,including c.include
这个选择A.为什么?
问题解答：
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