Many kinds of books,newspapers and magazines _______in this library英语单选求

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.)

选A
因为are kept 已经表示了现在还在被保存的状态,所以用are being kept是画蛇添足.
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