After he gave a report about the school,Mr.White____ the visitors around it.
A. went on to show B. went on showing
C. went on with showing D. kept on showing
选A。went on doing sth.是继续做同一件事情，went on to do sth.是做完一件事情后继续做另外一件事情 go on doing something=. go on with something=keep on doing something 因为是先做完报告再带他去参观的 不是同一件事 所以选A翻译：怀特先生在做完关于学校的报告后，又继续带着参观者参观学校周围环境。
A在他发表了学校报告后，怀特先生接着带游客参观了学校。go on to do 是放下手头的事去做另外一件事,eg. after he finished his homework, he went on to learn English.而GO ON DOING 就是继续做同一件事eg. after resting for a few mi
