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。