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Use "all of a sudden" in a sentence
"Am I supposed to care that my father, who went three years when I was a child without a single phone call, letter, or visit to me, on account of being too wasted to remember the fact of his seedage left behind in Georgetown, has all of a sudden decided to care?"
"I was going down Eisenhower Drive, and all of a sudden the car in front of me stopped short."
"But all of a sudden Roger Bortch broke into a trusting, masculine grin."