I believe it’s add a semi colon after ring
<span>Since you read this novel already, you know that boys were about to avoid the harsh reality of the war. This occasion, <span> the winter carnival, is a shelter for them, that brings only happiness to them. This place is a peace for them, but when they get the news from their friend, this illusion of safety is ruined. The escape brings them back to the fear they wanted to hide from and this is the meaning of the phrase 'separate peace'.</span></span>
Why did Ms. Campbell give Robin more lines in the play than us?
You need to use <u />us here, because <em>us </em>is an objective pronoun (and you need to use an indirect object here), and we is used to denote a subject.