they have finished a large part of the work andhe restmore diffic_英语解答

they have finished a large part of the work and
he restmore difficult
A,isB,areC,wasD,were

人气：405 ℃　时间：2019-10-27 08:53:46

解答

A
由于指work “工作”,the rest "其余的“要接单数谓语
前文是现在完成时,所以排除过去式was