the librarian said to her that the book she was looking for___ the previous day.
A. should return
B. could return
C. should be returned
D. should have been returned
please, detail explaination.
the librarian said to her that the book she was looking for___ the previous day. A. should return B. could return C. should be returned D. should have
By Gianna
=> D ( should have V3/ed : lẽ ra nên làm gì )