In this case, if you say "I study history at school," you are most likely telling someone where you study.* Example: "Where is the best place for you to study?" "Well, I can study math anywhere, but I study history at school because I never have the motivation to do it at home." And when you say "I study history in school," you are answering a question more about your field of study. Example: "Wow, you really know a lot about the middle ages!" "Yeah, well I study history in school."---so for this one, because you are "in school" (inside the time of your life where you are furthering your education by schooling) "in" is appropriate, not because you are "in"-side the school studying. You would have to say "I study history in the school (building)." which is weird and much better to say "I study history at school." *That all being said, "I study history at school," could also be used to answer a question about your field of study. "What are you studying?" "I study history at/in school but I study music in my free time." here's a helpful site I found online. Of course there are exceptions, but it's useful. http://www.learnenglish.de/mistakes/atvsin.html

Right now mine is 괜찮아 by Zitten. It's not typical K-pop. It's more indie rock. I like it a lot.

We would say it's "on sale." On sale means that price has been lowered/reduced. Like Frank says it's "25% off."

for "going to" you need the conjugation of the verb "to be" "I am" going to look for a new job. "We are" going to look for new jobs. "He is" going to look for a new job. For will and shall (which are mostly interchangeable, but "will" is more natural and preferred) you do not need the "to be" verb. I will look for a new job. I shall look for a new job.

Had you ever ridden a car like that before today? Did you tell the truth while you were on the witness stand? Were you really angry?

ridden in a car* sorry, italki doesn't let me edit.

There is no difference here. In both cases, you are emphasizing that you live very near, or "just" a few blocks. The definition of "just" here is "only." "I live only a few blocks from here." "I only live a few blocks from here."

I have lots, but here's a couple:

From "The Lord of the Rings, The Fellowship of the Ring":

Frodo: I wish the ring had never come to me. I wish none of this had happened.

Gandalf: So do all who live to see such times. But that is not for them to decide. All we have to decide is what to do with the time that is given to us. There are other forces at work in this world Frodo, besides the will of evil. Bilbo was meant to find the Ring. In which case, you were also meant to have it. And that is an encouraging thought.

 

From "Dumb and Dumber":

Harry: Where's the booze?

Lloyd: I got robbed by a sweet old lady on a motorized cart. I didn't even see it coming.

Harry: Oh, no, no.

Lloyd: Come on, Harry.

Harry: It gets worse. My parakeet, Petey.

Lloyd: Yeah?

Harry: He's dead.

Lloyd: Oh, man, I'm sorry. What happened?

Harry: His head fell off.

Lloyd: His head fell off?

Harry: Yeah. He was pretty old.

 

And then the best....later on Lloyd says: "We got no food, no jobs... our PETS' HEADS ARE FALLING OFF!"

(Actually, the entire movie of Dumb and Dumber is hillarious and full of awesome dialogue)