--Do you know any Russian? –Yes but .A. a fewB. a littleC. littleD. few

问题补充：

--Do you know any Russian? –Yes, but .

A. a few

B. a little

C. little

D. few

答案：

A. a few

(答案→)B. a little

C. little

D. few

解析：根据后面答语是肯定，而且Russian是不可数名词，所以用B。