Answer: "The (1846) crack" is what both sentences have in common, therefore we can combine them like this:
Since it could not be fixed, the Liberty Bell has had that crack in it ever since.
The subject is the young boy. We know this because the sentence is about what the young boy is doing.
Forceful is the comparative adjective because it is saying that it is MORE than the other
Answer:
Sentence two, "If my friend calls, tell them I'm at my violin lesson."
Explanation:
"Friend" is singular. "Them" is third-person plural.
In the book/movie Fahrenheit 451 you will see that the firemen don't put out fires;they burn books.
451 degrees Fahrenheit is the flash point of paper.