Mrs. Radley dies
Scout believes that the world is ending because it is snowing and she has never seen snow before.
Jem and scout ran out of snow so they used mud as well.
It’s the fourth option where Jean Valjean learns compassion and generosity from the bishop.
"perfect chances of verbs?" I haven't heard of that, ever, in my 73 years.
Is it possible that you meant "perfect tenses of verbs?"
One possible answer for consideration would be "auxiliary verb," such as "had," "have," and so on.