They cleaned house thoroughly.
Meaning: This sentence describes an action where people made the house clean by removing dirt, dust, or stains in a complete and careful manner.
Choice of Words: Cleaned means to make something clean by removing dirt, dust, or stains. House is a building in which people live. Thoroughly means in a complete and careful manner. So, "They cleaned house thoroughly" means they made the house clean by removing dirt, dust, or stains in a complete and careful manner.
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Related Expressions