Animals rest in dens.
Meaning: This sentence describes animals relaxing in their dens. It's like saying, The living things that are not plants are relaxing in the small, enclosed spaces where animals live.
Choice of Words: Animals are living things that are not plants. Rest is a state of relaxation or inactivity. In is a preposition that indicates a position or location within something. Dens are small, enclosed spaces where animals live.
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Related Expressions