问题补充：
Its really unwise of you him the news yesterday so that it has been disturbing him all the time．
A. having told
B. to tell
C. telling
D. to have told
答案：
A. having told
B. to tell
C. telling
(答案→)D. to have told
解析：考查不定式用法。本题中的it是形式主语，真正的主语是后面的不定式。当不定式的动作发生在谓语动词之前，使用不定式的完成式。当不定式与谓语动词同时发生，或者稍后发生的时候，使用不定式的一般式。本题中昨天把消息告诉他，是一个已经完成的动作，故使用不定式的完成式。句意：你昨天晚上把这个消息告诉他真是太不明智了。以至于这个消息一直都在困扰着他。故D正确。
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