A pair of scissors ________ given to this tailor by his father fifty years ago, and the scissors ________．
A.is … was never changedB.were … was never changedC.was … were never changedD.are … were never changed在线课程C
scissors这类表示“对”或“双”的词语，如果用a pair of scissors，我们谓语动词用单数结构，但如果用物主代词或定冠词the修饰的话，谓语动词用复数结构。