31. All books to the library more than three days late will be subject to a fine.A. retur

发布时间：2020-08-16 07:18:38


31. All books      to the library more than three days late will be subject to a fine.
A. return
B. returning
C. to return
D. Returned

网友回答

A. return
B. returning
C. to return
(答案→)D. Returned
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