You could listen to people with Russian accents. There's some really good websites that offer Russian tutoring. You could also go on YouTube and search for channels that also teach Russian accent.
Well, I would think it would be to get all the germs off of the dog so that there is a lessr chance that someone in the house will get sick. Also, the rain could get the dog sick, and if you let the dog back in without cleaning it, someone in the house could get sick. I assume that you probably care about your dog, so this is most likely done for the care and safety of your dog. There is absolutely nothing wrong with doing what you're doing. It is probably just done for everyone's safety.
Meaning of Literature in English
Porque means "because" in Spanish (and Portuguese).
Answer:
the purpose is to get the teachers to stop using red pens because it is effecting the way the students feel, because the color red usually symbolizes anger and bad things, so it doesn't make the students feel good.