问题

Where’s that report? —I brought it to you ____you were in MrBlack’s office yesterday

A:if
B:when
C:because
D:before

正确答案是：

同类题型

When I passed the entrance examination,I couldn’t help my success.

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our students need in the process of their preparations for NMET is time, healthand perseverance，the teachers stress.

There _______ a sport meet next week if it ______.

The shocking news made me realize _____ terrible problems we would face.