It seemed only seconds the boy finished washing his face.
A. the moment
B. since
C. after
D. before
网友回答
A. the moment
B. since
C. after
(答案→)D. before
解析：考查状语从句。it is + 时间段 + before + 句子 的含义是“不久……就……”。故选择答案D。句意：男孩似乎只花了几秒钟就洗好了脸。A一...就....,B自从。。。以来C在。。。之后D在。。。之前，没过多久就，趁。。。还未。