Everything was placed exactly it used to be before she left the laboratory.A. whyB. when

发布时间：2020-08-17 10:04:20

Everything was placed exactly      it used to be before she left the laboratory.
A. why
B. when
C. where
D. though

网友回答

A. why
B. when
(答案→)C. where
D. though
解析：答案：C　考查状语从句。句意为：在她离开实验室之前，她把每件东西都准确地放在它们原来的位置上。由语境可知，此处应用where引导状语从句。故答案选C。
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