The poor little boy by his heartless parents was seen begging in the street.A. abandonin

问题补充：

The poor little boy by his heartless parents was seen begging in the street.

A. abandoning

B. to be abandoned

C. having abandoned

D. abandoned

答案：

A. abandoning

B. to be abandoned

C. having abandoned

(答案→)D. abandoned

解析：考查非谓语动词。句中过去分词abandoned作定语，修饰名词the poor little boy，表示被动关系。句意：看见被他的无情父母抛弃的可怜的小男孩在大街上乞讨。故D正确。