Read the sentence. Mrs. Nguyen explained to the class that they did __________ on their achievement exams. Which word belongs in the blank?

“Did” is an action verb, so the blank calls for an adverb describing how they did. “Well” means they performed successfully: “they did well on their achievement exams.” “Good” is usually an adjective, and “fairly” typically needs another describing word, as in “did fairly well.”

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