Much ______ been said about the problem but nothing ______ been done so far.

问题描述:

Much ______ been said about the problem but nothing ______ been done so far.
A.has,had B.has,has C.had,had D.have,have

B.has, hasMuch和nothing作主语,谓语动词都要用单数.另外,由于句中含有so far(到目前为止),这是现在完成时的标志,所以答案为B.