Answer:
The boys swore that the books were theirs.
Explanation:
The idea that "theirs" needs an apostrophe, comes out of the fact that on virtually every other word, 's indicates possession, so English speakers sometimes think theirs should be spelled their's. However, this is always incorrect – <em>theirs is the only correct spelling</em>.
Answer:
Yes, interviews are very important.
Explanation:
Things in your personal life aren't things that are going to be on your resume. What if your boss wants to know about you a little more? Like things that aren't on your resume.
Answer:
I think it's implying that if you want the reward your are going to have to go through challenges to get it
Are you asking how the story of Beowulf relates that of modern times?
Most likely, they didn't view it very well