Question

—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

Answer 1

B。

将四个选项逐一填入空格处，只有填when时，意思最通顺。句意为：当你昨天在布莱克先生办公室时我就带给你了。