a run-on
A run-on sentence is a sentence that has two or more complete thoughts without proper punctuation. This makes the sentence grammatically incorrect. For example: I have a dog she runs fast. There are two complete ideas, but they aren't punctuated correctly. It's also missing a conjunction. Two join the ideas, it must be changed to: I have a dog, and she runs fast.
A fragment is an incomplete sentence. Most fragments are dependent clauses. For example: Since the dog runs fast. This is a fragment because of the word "since". Since tells you that there should be some follow up information about the dog running fast. Since the dog runs fast, she must always be on a leash.
Yes. You can separate the sentence at “Nearly two years later...” by adding a period after CIA.
Answer:
He is setting the stage for a flashback into fred Collins children
The plot of ‘Giver’ is Jonas a 12 year old boy who thought he loved in a utopian society where everything was perfect. As the novel goes further and further into the story we come to realize he lives in a dystopian society where (SPOILERS) everyone looses their memories.

<h3><u>dear </u><u>maam </u><u>and </u><u>sir!</u></h3>
good day, today I apologize to you because I did not attend our class for 2 days because I was sick. I will make a way to catch up with our lessons, again sorry for not attending our class. Hope you understand it thanks
<h2><u>hope</u><u> it</u><u> helps</u></h2>