People smile often.

Meaning: This means that people are happy or pleased frequently and show it by smiling often.

Choice of Words: People is a plural noun that refers to human beings in general. Smile is a verb that means to show happiness or pleasure by curving the corners of the mouth upward. Often is an adverb that means frequently or habitually. In this sentence, the words together describe people frequently showing happiness or pleasure by smiling.

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