noun, verbal noun
Your exertion is strong. You'd think this means you're working hard or something, but it means studies (like studies you have for a test or something). So for this, just imagine yourself exerting yourself really strongly on your homework. These are your studies / what you study.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
Thank you so much. I've been learning a lot from you.
I've been slacking off and haven't been studying as much recently.
Keep up your English language studies. I’m always working on my Japanese too, so I know how hard it is.