I was so familiar with her that I recognized her voice I picked up the phone.
A. the moment
B. after
C. before
D. while
网友回答
(答案→)A. the moment
B. after
C. before
D. while
解析：名词短语the moment 用作连词，相当于as soon as,引导时间状语从句，意为“一……就……”。类似用法的短语或词还有the minute，the instance，directly，immediately等。