The earth is our house. We must _____ the land,air and water clean.
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时间：2024-08-17 09:21:30
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The earth is our house. We must _____ the land,air and water clean.【专家解说】：keep 当意思为保持环境卫生整
【专家解说】：keep 当意思为保持环境卫生整洁时 用 keep
keep clean是常用的词组
The earth is our house. We must _____ the land,air and water clean.
The earth is our house. We must _____ the land,air and water clean.【专家解说】：keep 当意思为保持环境卫生整
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