We hope the little____we've been able to do has been of some use to you.

问题描述:

We hope the little____we've been able to do has been of some use to you.
填WHAT 还是THAT 为什么

答案是THAT.把你的句子分成两句,就容易理解了.1 we hope the little has been of some use to you.2 we have been able to do the little.再把它们合并起来(用定语从句):We hope the little (that / which ==the ...