The door of the jail being flung open from within, there appeared, in the first place, like a black shadow emerging into sunshine, the grim and grisly presence of the town-beadle, with a sword by his side and his staff of office in his hand. which best describes the purpose of the words “black shadow,” “grim,” “grisly,” and “sword”? to impart a sorrowful mood to impart a solemn mood to establish the early morning setting to establish the militant jailhouse setting

sam knew that staying up late on a weeknight would effect his exam performance the next day. however, he believed that his friends would be mad at him if he didn't join them. peer pressure and the thought of losing his friends scared sam. he planned to meet them for a couple of hours and then leave early to study for the exam.

no its not a run on sentence however i think you meant wet suits not sours also a run on sentence would be like surfers surf all winter long in southern california by using wet sours to keep them warm and the live their all year long  

what class or school are you in i may