Question

The calculations, had they been done by hand, ______all practical value by the time they were finished.

A. had lost  B. would lose   C. should have lost  D. would have lost

 

Answer 1

【答案】

D

【解析】

试题分析:句意：这些计算如果用手工进行的话，那么当他们完成后将失去所有的实际价值。句中had they been done是if they had been done的省略，是对过去的虚拟，所以主句谓语应该用would have done，选D。

考点：考查动词时态。