"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.
Hercules killed his family so Hercules had to complete twelve labours and Hercules was contrite.
Creating an advertisement for sportswear
He shot his arrow through the seven trees because it was a challenge. It was done to prove his strength, valor, and skill. Not only did it do that, but it also pierced a mountain, entered earth, made a circle and came through the other side and went back into Rama's quiver.
B.
Read this line, out loud.
It was a short pause that contributed to the flow of things. This applies even in a sentence.