What happens to Dr. Lanyon at the beginning of chapter 8? What suspicions do you have about the cause of this occurrence? What might be a reason for Stevenson's not telling us what happened to
Lanyon? What other important details are left unexplained at this point?

Acquiring english is a way of learning where you learn english by birth, this includes listening to your parents, brothers and sisters and on the whole learning it from the environment around you while mastering standard english need qualified institutes and teachers who make certain programs and syllabus to you master the standard english. this also can include a long session of academic studies before you can master the standard english.standard english is necessary for literary works, official usage and writing materials for standardized publications or when someone needs to speak publicly. in most cases the employers of a company also demand and like the use of standard english from their employees. 

Naruto didn’t die. i highly doubt it. that would cause a lot of negative flashback if such a thing happened.

This an limited third person because they are telling the   story for the person.