The answer is assonance i believe (sorry if im wrong)
In general Huck is a character who tends to separate himself from people he disagrees with. If someone thinks something in a different way than he does, Huck will be grim about it and won't have the desire for that person to be near him or he won't even listen to them. Often it happens that he has to do it even if he doesn't want to.
1 is nothing can be better 2 im not really sure but 3 is he might die
The second one is a run on sentence