—Where's that report?—I brought it to you you were in Mr.Black's office yesterday.A. ifB.

发布时间：2020-08-17 08:34:18

—Where's that report?
—I brought it to you      you were in Mr.Black's office yesterday.
A. if
B. when
C. because
D. before

网友回答

A. if
(答案→)B. when
C. because
D. before
解析：该空表示“当……的时候”，因此应填when引导时间状语从句。
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