Fossils, ___ as... is a definition structure. With which are omitted, it needs the past participle defined; de plus fined confirms the spelling.
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First-sentence anchor
8 / 10The opening sentence fixes the topic: fossil evidence helps explain the history of life. The paragraph will define fossils and then state what they reveal about evolution.
Blank-by-blank analysis
de_____→definedada____→adaptedThe auxiliary have requires a past participle, forming have adapted. Syntax determines the form before the visible letters verify it.
evolu____→evolutionOf requires a noun, and evolution already appears in the complete opening sentence as direct repetition of the paragraph's topic word.
Method summary for this item
Use the opening sentence to establish the fossil-and-evolution topic, rebuild structures such as defined as and have adapted, then use the visible letters to verify spelling.
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