"Ma soeur fait ses études au collège."
soeur is "sister" in French
To write "my sister" in French, you would say "ma soeur."
désolé ma chère soeur
college is translated 'université' or 'faculté' (especialy for medical studies) in French. Do not mix that with the French 'collège' which is junior high school.
Mainly studying things that relate to what they want to teach, as well as techniques, such as how to write on the whiteboard, and how to plan lessons.
ma belle sœur et nièce (only my sister is beautiful) mes belles sœur et nièce (they are both beautiful) note that "belle-sœur" in French sounds exactly the same, and means sister-in-law. A French speaker hearing this will certainly think of your sister in law.
Sister
It would be Lycée Peaklane.
My sister and I... Your sister and I...
여동생 = sister
He has in French is "Il a..." Hope this helps :)
To write "50th" in French, you would write "50ème."