How many years had World War II been going before the United States officially entered
the war?

Which sentence correctly uses a normative case pronoun

Which of the following is a compound complex sentence

Precarious subsistence voracious abysmal wood is to fire as food is to arrowright grinning is to cheerful as teetering is to arrowright conniving is to scheming as terrible is to arrowright mournful is to sad as gluttonous is to arrowright