单选题______in the queue for half an hour, the old man suddenly realised he had left the cheque in the car.A WaitingB To waitC Having waitedD To have waited

题目
单选题
______in the queue for half an hour, the old man suddenly realised he had left the cheque in the car.
A

Waiting

B

To wait

C

Having waited

D

To have waited


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参考答案和解析
正确答案: B
解析:
句意:这个老人排队等了半个小时后,突然意识到他把支票留在车上了。根据句意可知,wait发生在realise之前,而且动作已经发生,因此要用完成时的现在分词形式。故答案是C项。