改句子:what are in the box?---There are some books.(改一处)

问题描述:

改句子:what are in the box?---There are some books.(改一处)

What is in the box?--There are some books.
因为你问的时候并不知道盒子里有什么 所以用单数

what are in the box?---There are some books in。

what is in the box?
当你不知道箱子里到底是什么的时候,提问应该用单数.

what are there in the box?