How can you rephrase this sentence to sound better? how can you be, once again, more descriptive? What's a better simile you can use to show how the boy is feeling? "Face as pale as a cold and dark winter night"

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's. 

Ok, you asked the question and posted the answer on there. what do you need?