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in the queue for half an hour, the old man suddenly realized he had left the check in the car.A. Wa

编辑:chaxungu时间:2026-04-27 02:48:56分类:高中英语题库

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

A. Waiting B. To wait

C. Having waited D. To have waited

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【答案】C

【解析】C 考察状语和时态,等的动作已经先完成了,他才意识到,并且这里是原因状语,不定式只能做目的状语。