The answer explains the age of a person four years ago and highlights developmental milestones achieved at that age compared to the present.
Four years ago, a person who was 4 years old would be 4 years old. At that age, most children can run, climb stairs, scribble with a crayon, and use simple sentences. In comparison, now, they can skip, ride a bicycle with training wheels, catch a ball thrown from a meter away, balance on one foot, and ask many questions.
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