2. 外语
  3. You______Mark anything. It was none of his business.

You______Mark anything. It was none of his business.

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问题 You______Mark anything. It was none of his business.
选项 A、needn’t have told
B、needn’t tell
C、mustn’t have told
D、mustn’t tell
答案A
解析 本题考查虚拟语气。情态动词+have done表示“原本可……(却)”，是常见的表达虚拟语气的结构。
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