问题补充:
I hope the little I have been able to do has been of some use.
A. that; that
B. 不填;by which
C. what; what
D. 不填;with which
答案:
(答案→)A. that; that
B. 不填;by which
C. what; what
D. 不填;with which
解析:考查宾语从句和定语从句。 the little I have been able to do has been of some use是一个宾语从句,从句不缺成分,用that引导,也可省略。 I have been able to do是定语从句,先行词是the little,在定从中作do的宾语,用that引导。所以选A。