I had walked a few steps I realized that I was lost in the thick fog.A. unless B. Before

发布时间：2020-08-17 13:56:21

I had walked a few steps      I realized that I was lost in the thick fog.
A. unless
B. Before
C. When
D. since

网友回答

A. unless
(答案→)B. Before
C. When
D. since
解析：before表示“还没……就……”
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