十万火急what should be done have benn done为什么要将have改为has?

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十万火急what should be done have benn done为什么要将have改为has?

十万火急what should be done have benn done为什么要将have改为has?
十万火急what should be done have benn done
为什么要将have改为has?

十万火急what should be done have benn done为什么要将have改为has?
把what should have been done想成是一个词.
"需要做的事情",是个第三人称单数阿.不是第一人称呀,所以后面要改成和第三人称同步的has