—Allthevolunteers（志愿者）wereverytired,but　 ofthemtookares...

问题详情：

—All the volunteers（志愿者） were very tired, but 　  of them took a rest.

—They were busy looking for the missing people.

A. everyone   B. all       one　               D. none

【回答】

D  由题意可知。

知识点：不定代词

题型：选择题