WHEW! That's a lot of words, let's go over 5 of them with your responses and I'll help you learn how to use all of these words in sentences ❤️ (We'll do the next 5 next week!!!) 

1. 그냥 (geu-nyang): just, just because 
2. 수업 (soo-eop): class 
3. 영화 (young-hwa): movie 
4. 언니 (eon-ni): older sister/older female (used by female) 
5. 멘붕 (men-boong): mental breakdown, losing my mind

  

1. 저는 그냥 학교에 안 가고 싶어요                                                                           

(jeo-neun geu-nyang hak-gyo-eh ahn ga-go ship-uh-yo) 

This is a great use of the word! We're off to a perfect start~ I think if you wanted to make it even more natural and casual (like you're talking to a friend) you could say: "나 그냥 학교 안 가고 싶어..." but great job ❤️

(han-guk soo-eop-eun jae-mi-it-da)

ALMOST there bestie! this sentence would translate to "Korea class is fun!" But I'm guessing what you wanted to say was Korean class is fun! - SO you gotta add an 어 and the correct sentence would be: 한국어 수업은 재미있다! 📗

(yeong-hwa-reul "elemental" neo-mu bo-go ship-uh-yo) 

This one is ALSO so close. For this sentence to be grammatically correct you would have to say "영화 엘리멘탈을 너무 보고 싶어요" You have the 를/을 but just had to change where it was! 😄

(sal-jjak men-boong wat-sseo)

None of you did this word so I decided to give you my own example! 

This sentence means "I had a bit of a mental breakdown" try using it in your next conversation 😍