问题
选择题
__________ 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
答案
答案：D
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.