While crossing the mountain area, all the men carried guns lest they___________(受到野兽攻击).

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问题 While crossing the mountain area, all the men carried guns lest they___________(受到野兽攻击).

选项

答案should be attacked by animals

解析 本题考查 lest引导的目的状语从句中的虚拟语气形式和被动语态的用法。由句中lest“以防,以免”可以判断其后的目的状语从句中应用 should+动词原形形式,根据句意又可得知此处应用被动语态。
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