Question

But for their help, we ______ the program in time. A．can not finish B．will not finish C．

But for their help, we ______ the program in time. A．can not finish B．will not finish C．had not finished D．could not have finished

Answer 1

D

考查虚拟语气。根据But for their help要不是他们的帮助；可知这是一个与过去事实相反的含蓄的虚拟语气句，后面主句应该使用情态动词+have done;句意：要不是他们的帮助，我们不能够及时完成这项计划。