题目内容
---Congratulations!
---Thank you. But for your help, we ________ in the experiment.
- A.will never succeed
- B.shouldn't have succeeded
- C.couldn't have succeeded
- D.mustn't have succeeded
C
句意:--祝贺你!--谢谢,没有您的帮助,我们做此试验,不可能成功。
句意:--祝贺你!--谢谢,没有您的帮助,我们做此试验,不可能成功。
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