Question

It will be long　　　she sees Mr. White again at Beijing, 　　　business has just started in Switzerland.

A．after; who	B．since; who
C．when; whose	D．before; whose

Answer 1

D

选D。考查复合句。从题干的所用句型和时态可知前部分是句型It will be long before加从句; 逗号之后是一个非限制性定语从句, whose business在定语从句中作主语, 所以选D项。