Answer: Sarcasm is the use of irony to mock or convey contempt.
Cannot is formal, while can't in informal.
"Cannot" and "can not" are interchangeable, but when you are asking question for example:
"why can't I...", you can also say "why can I not..." (which is more formal), but you can't say "why cannot I..."
9. Compensation
10. Flattered
11. Broken into
12. Capsized
