Smoke filled the air thickly.
Meaning: This sentence describes the air being densely filled with smoke due to burning.
Choice of Words: Smoke refers to the visible particles suspended in the air due to combustion or burning. Filled means to occupy or make full. The is a definite article used before a noun to indicate a specific one. Air refers to the mixture of gases that surrounds the Earth. Thickly means in a dense or concentrated manner.
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