I'm not quiet sure what this is asking but this is appears to be related to cover letters, if that helps.
"Of" is a preposition in the phrase "Of studying" and "until" is another, as well as "to" in the phrase "to college" so there are 3 in that sentence.
To keep the technology secret, the government told the media that their pilots could see the German planes because they consumed so many carrots. ... During WWII, the British government told the media that eating carrots would improve their night vision.
I think it is like how big or what the word means.
?? is this an actual question