Unit 4 lead -in-task1Watch the video clip and tick the library rules that are mentioned by the librarian.

A. Smoking is not permitted in the library.
B. No bags, umbrellas, parcels may be brought into the library.
C. Library materials borrowed must be returned on or before the due date.
D. Users are not allowed to deface public property.
E. Silence must be observed strictly in the library.