The blue jeans 50 dollars. And that black pair of jeans 60 dollars.A. are; costsB. are;

问题补充：

The blue jeans 50 dollars. And that black pair of jeans 60 dollars.

A. are; costs

B. are; cost

C. pay; are

D. spend; is

答案：

(答案→)A. are; costs

B. are; cost

C. pay; are

D. spend; is

解析：

试题分析: 句意：蓝牛仔裤50美元，那条黑牛仔裤60美元。cost花费，物做主语；pay付，人做主语；spend花费，人做主语。is是，单数，are是，复数。jeans牛仔裤，谓语动词为复数；that pair那条，谓语动词为单数；故选A