I don't know what's ____________(写) on the blackboard.是被动语态吗

I don't know what's ____________(写) on the blackboard.是被动语态吗
I don't know what's ____________(写) on the blackboard.
是被动语态吗

I don't know what's ____________(写) on the blackboard.是被动语态吗
written
是被动语态

written
我不知道在黑板写的是什么。
希望我的回答对您有帮助，祝好！
及时采纳，谢谢。

可以是一般现在时的被动语态：what is written on...，也可以是现在进行时的被动语态：What is being written on.....
俊狼猎英团队为您解答

written
被动，是的。
很高兴为你解答！
老师祝你学习进步！
望采纳，多谢你的问题！^_^

是的，答案是written.