Alternative grading (evidence)

Unfortunately i live in the middle east and our teachers are saying that our exams might get cancelled and they will use evidence instead. So what exactly is evidence?? Is it just the mock exams or is it the homeworks or what, I'm asking because in chemistry i was essentially doing independent study and wasn't really sending in homework, also for various reasons i couldn't attend multiple quizzes, they have my mocks tho so will that suffice?? I'll try sending in at least some of my hw but I'm really scared this is supposed to be my last year if i get fucked by this I'm cooked