单选题：Butforyourhelp,I__________theprojectbeforethedeadline.

题目内容：

Butforyourhelp,I__________theprojectbeforethedeadline. A．canfinish
B．can'thavefinished
C．couldn'tfinished
D．couldn'thavefinished

参考答案：

答案解析：

第（54）题答案

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