问题
选择题
It is a strange phenomenon that some young people today think it is their parents’responsibility to earn money and_______ to spend it.
A．them
B．they
C．their
D．theirs
答案
答案：D
考查物主代词。句意“有一个奇怪的现象是，一些年轻人认为他们的父母有义务赚钱，而他们负责花钱。”这里的theirs是名词性物主代词，指代their responsibility。故选D。