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Answer:1. well 2. joint 3.wiseExplanation:Answer 1:Jonas expected to dowellon the statistics exam.An adverb is a word that modifies or describes a verb. The word 'well' is an adverb which is used to describe the verb 'do' in the sentence.Answer 2:We might need ajointconference with the shareholders of the company.The adjective 'joint' means shared by two or more people. A joint conference in the sentence is therefore a conference between the company and its shareholders.Answer 3:The CEO made awisedecision when he chose to step down.The word 'wise' is an adjective that describes the action taken by the CEO to be marked by deep understanding and sound judgement....