问题
选择题
With our country entering an aging society, ______ the retirement age is probably unavoidable.
A．having delayed
B．delaying
C．being delayed
D．to be delayed
答案
答案：B
题目分析：句意：随着社会进入老龄社会，延迟退休年龄可能是难以避免的。分析句子成分可知，这句话的主语是______ the retirement age，所以用动名词做主语，所以选B。