问题描述：
Many kinds of books,newspapers and magazines _______in this library英语单选求
Many kinds of books,newspapers and magazines _______in this library
A.are kept
B.are being kept
请问应该选哪个为什么.（其它选项省略了.）
Many kinds of books,newspapers and magazines _______in this library
A.are kept
B.are being kept
请问应该选哪个为什么.（其它选项省略了.）
问题解答：
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