Question

—Where’s that report, Daniel?
—I brought it to you     you were in Mr. Black’s office yesterday.

A．if

B．when

C．because

D．before

Answer 1

B

试题分析：if是否，如果；when当……时；because因为；before在……之前。句意：丹尼尔，那个报告在哪儿？——昨天当你在布莱克的办公室时，我拿给你了。结合语境可知选B。