问题
选择题
. __________ in Hangzhou station for two hours, the old man eventually caught the last train to go back to his home in Huangyan.
A．Waiting
B．To wait
C．Having waited
D．To have waited
答案
答案：C
考查非谓语动词。主语the old man与wait 之间是主谓关系，所以用现在分词，且分词的动作发生在谓语动词之前，应用现在分词的完成式。故选C。