Tips and Notes say:
The particle 만 means only. The topic, subject, and object particles come after it.
So why does this not say 아침만을?
I believe the object particle can be dropped sometimes when the object is clear like in this case
Could you also say 아이가 아침밖에 안 먹습니까?
yes you can. And your sentence is better xD
That roughly translates to "does the child eat nothing but breakfast?" As far as I know, Duo prefers direct translations so that people would get used to the words and their direct meaning.
The answer is "아이은 아침만 먹습니까". Shouldn't it be "아이는" ?
Yes, I think you are correct. Noticed that too.
Yes. Flag it if you can ;)
Why "아이가 아침만 먹어요?" is not correct?
i think they're both correct, but this sentence is formal-high respect while your sentence is informal-high respect. you can say your sentence to regular people while you can use the original sentence to people above you, such as your boss.
I feel like I'm getting interrogated by the CPS.
Nah he also eats plates