题目

—Henry doesn’t seem to be what he was. —No. so many terrible things in the war has made him more thoughtful. A. Seen B. His having seen C. Having seen  D. To have seen 答案：B 解析: 句子的谓语是has made，“看到战争中如此多可怕的事”是说明已发生的事实，对现在有影响，故应用动名词的完成式作主语。

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