问题
选择题
Our special thanks to go thousands of volunteers, without ____tireless work, none of this would be possible.
A．which
B．whom
C．whose
D．that
答案
答案：C
题目分析：句意：我们特别感谢成千上万的志愿者，没有他们不辞辛苦的工作，这一切都不会成为可能。without ____tireless work是非限制性定语从句，修饰volunteers，所填词要做定语，用whose 。所以选C。