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