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I went to see Professor Johnson, only ______ that he had left the city the night before.

A. to learn B. learn

C. learned D. learning

A

【解析】l

试题分析:“only+to do”表示出人意料的结果。句意:我去看望Johnson教授,却发现他在头一天晚上已经离开了这个城市。故选A。

考点:考查不定式用法

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