阅读下面材料，在空白处填入适当的内容（一个单词）或括号内单词的正确形式。
The idea of reading online      (take) on a whole new meaning lately as a lending library has opened on Line2 of Shanghai’s metro. This "underground" library allows subway riders to choose a book at one station and leave it at another station when they’ve finished reading it.     the service is free!
The idea is to encourage more people to read books and to make better use    their time while they ride back and forth to work. So far, it’s been     great success with most people    (return) the books and also leaving a one Yuan donation which is used      charity.
Shanghai’s underground library is an example of "guerilla libraries" (流动图书馆) which have been springing up all over the world.      (like) a traditional library, a guerilla library is usually set up by individuals     want to connect people of similar interests within a community. It may be a few shelves of books set up on the corner in a neighborhood, or just a book left in a coffee shop with      (instruct) inside to pass the book along after it’s read.
According to the guerilla library movement, e-books have taken the passion out of reading. They say people are losing out on the very emotion     comes with holding a real book in their hands and also the satisfaction that comes with sharing a book with another person.