her son for half a month, Marcia decided to leave for Texas with the hope of finding him.
A. Not heard from
B. Having not heard from
C. Not to hear from
D. Not having heard from
网友回答
A. Not heard from
B. Having not heard from
C. Not to hear from
(答案→)D. Not having heard from
解析：本题考查的是-ing分词作状语的用法。Marcia是hear from的执行者，用现在分词。非谓语动词的否定都是在前面直接加not.