Dude, You can do that. That really easy. It only 80 words. Plus it's a diary so it's not complex. You can literally make it up too. You could say your first day at McDonald's or first day working at a candy store.
Answer:
Please help me with the homework later
I think it's D because it's the main thing
True, you want them to understand you as easily as possible and they will not know slang, etc. if they speak little english
