"What's written on the blackboard? I can't see it clearly."

Translation: 黑板上写什么？我看不清楚。

[IanMcFarla17]

Since other sentences in this lesson use 在黑板上 for 'on the blackboard', I'm not clear why it's marked wrong when I use 在 here。

[Crookef]

I don't get it either. Leaving tactical comment in case some Chinese captain may enlighten us.

[David605027]

没有什么区别吧。You should report, it should accept it without or without 在。

[jamtintraders]

Curious to know if this would have been ok? 黑板上写的是什么？我见不清楚。

Perhaps I could have written 在黑板上写的。。。?

[alanxoc3]

Also, would this work? 黑板上写着什么？我看不清楚。

[RaphalSylv]

Yes, another example:
黑板上写着什么？
What is written on the blackboard?

[PiFi700860]

What would be the difference between 黑板上写什么 and 黑板上什么写 ? Kinda curious and uncertain about it.

[VitorZampa]

I typed only "黑板上寫什麽？" and accidentally hit "send". Still, my answer was considered correct. Perhaps this should be fixed? There was, naturally, no such option on the "report" section

[yoshiihsoy]

黑板上有什麼寫？

[Oleg324122]

Why "can" must not have any translation? 我不能看清楚 is marked as wrong.

[kvSLZAmI]

黑板上写什么？我 看不清楚。？？？

[PhantomDub391]

黑板上寫什麼?