Frankly speaking of them knew what the other was doing that morning.A. noneB. neitherC.

问题补充：

Frankly speaking, of them knew what the other was doing that morning.

A. none

B. neither

C. some

D. all

答案：

A. none

(答案→)B. neither

C. some

D. all

解析：B 考察代词。句意：坦白说，他们两个都不知道那天早上对方在做什么。由the other可知此次指两者之间。光顾B正确。