They were all very tired but of them took a test.A. everybodyB. bothC. neitherD. none

问题补充：

They were all very tired,but of them took a test.

A. everybody

B. both

C. neither

D. none

答案：

A. everybody

B. both

C. neither

(答案→)D. none

解析：A. everybody每个人B. both两者都 C. neither两者都不 D. none所有的都不；句意：他们都非常累，但是没有人休息。none表示全部否定，neither表示对两者的否定，故选D