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whatshouldbedonehavebenndone为什么要将have改为has?十万火急whatshouldbedonehavebenndone为什么要将have改为has?十万火急wh

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