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

题目

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

答案

B．has, has Much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.