We asked John and Jerry, but ____ of them could offer a satisfactory explanation.
#15566
A
either
B
none
C
both
D
neither
推荐题目
There is  _____ with him. 
#57948
A
anything serious
B
nothing serious
C
serious something
D
serious anything
He has done_______to improve his writing.
#56755
A
something useful
B
anything useful
C
useful nothing
D
useful anything