Answer:
1.) They
2.)Mine
3.)They immediately follow the noun - might be wrong
4.) The librarian showed we some travel books.
5.)emphasize the noun
6.)He, Jacob Smith, studied for 10 hours.
7.)Jayden is the boy whom scored the goal in the big game.-Who is this package for?
8.) I
9.) The singer herself wrote that beautiful song.
10.) I met her at the volunteer dinner and learned she is quite creative.
Step-by-step explanation: