Question

------ Henry doesn’t seem like the same person.

------ ________ so much in the war has made him more thoughtful.

A. For him to see  B. His seeing

C. Having seen  D. To have seen

Answer

B

【解析】

试题分析：考查动名词做主语的区别。从上下文来看，第二个句子的谓语为“has made”,前面所填部分是主语，C项是现在分词的完成式不能单独做主语；D项是不定式的完成式只能作状语，排除；A项不定式放在句首且有for引出不定式动作的逻辑主语一般作状语，排除；B项为动名词具有名词的性质特点，能做主语，动名词做主语时其逻辑主语用形容词性物主代词或名词所有格表示；故B正确。

考点：考查非谓语动词的区别。