Question

【题目】When I got on the bus, I I had left my wallet at home.

A. was realizing

B. realized

C. have realized

D. would realize

Answer 1

【答案】B

【解析】句意：当我坐上公共汽车时，我才意识到我把钱包忘在家里了。根据句意知when引导的时间状语从句的谓语动词表示的动作和主句的谓语动词表示的动作同时发生，且从句用一般过去时。故B项正确。