All of the doctors have worked for a long time but of them stop to have a rest.A. noneB.

问题补充：

All of the doctors have worked for a long time, but of them stop to have a rest.

A. none

B. nobody

C. neither

D. not

答案：

(答案→)A. none

B. nobody

C. neither

D. not

解析：none一个也没有； nobody 没有人；neither两者都不；not不。句意：所有的医生都 工作了很长时间，但是他们没有人停下来休息。Nobody一般不和of them搭配使用，故选A。