Question

【题目】_____in the queue for half an hour, the old man suddenly realized he had left the money in the car.

A. Waiting B. Having waited

C. To wait D. To have waited

Answer 1

【答案】B

【解析】

试题分析：考查分词做状语。本句中动词wait与句子主语the old man构成主动关系，所以使用现在分词在句中作状语。而且这是一个已经发生的动作，所以使用现在分词的完成式having done。句意：排队等了半个小时，老人突然意识到把钱忘在了车里。故B正确。