But for your help, I ______ my work yesterday.A、can’t finishB、wasn’t able to fi

游客2023-10-08 47

问题 But for your help, I ______ my work yesterday.

选项 A、can’t finish
B、wasn’t able to finish
C、couldn’t finish
D、couldn’t have finished

答案 D

解析本题测试的是虚拟语气的用法。当由but for引导的介词短语作状语时，其主句的谓语要用虚拟语气。由于该句是表示与过去事实相反的假设。因此本题答案为D。

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