做主语的表示上班迟到的原因，自然应该是"交通堵塞"，而不是"被堵的道路"，所以还是动名词复合结构，答案为D。

     The concerned mother thrilled at the news of his son ____ to college.

      A. had been admitted 　  　    B. admitted 　　

      C. having been admitted 　　   D. having admitted

     消息表达的应该是个事件，说明不是"被录取的孩子"，介词of后不可能接从句，说明of后为动名词的复合结构，答案是C。

     3） 注意分析非谓语动词与其逻辑主语之间的关系

 　　正确判断非谓语动词与起逻辑主语之间的关系是正确选择非谓语动词形式的保证，不管是做什么成分的非谓语动词都体现以下特点：

     如果非谓语动词与逻辑主语之间是主谓关系，则用现在分词；

     如果非谓语动词与逻辑主语之间是动宾关系，则用过去分词；

     如果表示将来，则用动词不定式。

     这是非谓语动词运用的基本原则，然后再根据其不同的作用，掌握其更细的规则。如：

     (1)做定语时

 　　做定语的可以是动名词、分词或不定式。动名词做前置定语，所构成的大多为固定短语，四级考试一般不涉及。主要考查分词和不定式做定语。分词或不定式做定语一般做后置定语。

     ① The project ____ by the end of 2000, will expand the city’s
telephone network to cover 1,000,000 users.

        A. accomplished 　　       B. being accomplished 　　

        C. to be accomplished 　　 D. having been accomplished

     ② Hard work ____ on time will lead to better grades.(1995.1)

        A. done 　                 　B. be done 　　

        C. having done 　          　D. to have been done

     ③ As early as 1647 Ohio made a decision that free, tax-supported schools must be established in every town _____ 50 households

     6） 熟记固定搭配，分清不定式与to加动名词

     其实容易产生不定式符号与介词混淆的只是为数不多的某些句式，只要平时注意积累即可。

     prefer doing something to doing something

     look forward to doing something

     be used to doing something (习惯于做某事)

     stick to doing something

     object to doing something/ have objection to doing something

     be opposed to doing something

     admit/confess to doing something

     I have no objection _____ your story again.(2000.6)

     A. to hear                 B. to hearing

     C. to having heard         D. to have heard

     The man in the corner confessed to ________ a lie to the manager of the company.

     A. have told             B. be told

     C. being told            D. having told

     从出题人的心理来看，如果有to do something和 to doing something的对比项，一般答案是to doing something。