__________ 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
D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.