图书馆里必须做什么 英语作文 What must be done in the library 在图书馆应该做什么 Please keep quiet. Please feel free to ask the librarian for assistance with any reference material. Please keep the study area neat and clean. Please turn off your cell phones when you are in the library. 不应该做什么 Please do not eat or drink in the library. Please do not disturb others in the library. 本文来源:https://www.wddqw.com/doc/74f16917834d2b160b4e767f5acfa1c7ab008273.html