Thank you for all your hard work last week.I don't think we

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/14 19:47:19

Thank you for all your hard work last week.I don't think we ___ it without you.
A can manage
B could have managed
C could manage
D can have managed
这题为什么选B,为什么用虚拟语气现在完成时态啊?

说明一下,B是过去完成时.
这句话的翻译是谢谢你上周的努力工作,我认为（如果）没有你我们不能完成.
last week 说明了是过去式
without 虚拟语气与过去相反的虚拟,固定用法后半句是虚拟语气,是对过去的虚拟,所以应该用“could/should/would+have+过去分词”
事情其实已经完成,后半句是进行了假设：没有你工作是完成不了的,而实际是工作完成了.

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