1 books were written by hands in ancient times
2The history was changed by inventing of printing.
3 books are found by librarians
4 reading preferances are developed by thematic selection of books
5 his main characters were introduced only in the 2nd part of the story
6 the topic was discussed 2 days ago
7 the walls were colored in green and yellow stripes
8 the series of books were published this year