1.Haw many books are there in /on the world? 2.The first paperback books appeared in/on the 1900s
3 Which of these superheroes first appeared in/on
a comic book
4.The longest sentences in/on a work of fiction is 823 words.
5.Someone bought the Codex Leiceter in/on 11 November, 1994
надо
1)in
2)in
3)in
4)in
5)on