Tôi nghĩ nên tôi tồn tại.
Why can't you say một cái vật thể? More generally when do you need and when don't you need a classifier? I thought when you used a number you needed a classifier?
I agree, there should be an explanation if this is not appropriate. Rules should be explained first before the tests!!
Rejects mà for nhưng. I see this all the time. Mà seems to be used a lot in Vietnamese sentences, but if you try using it here, you get zapped.
why no cai?
Oh so what are you? Ghost or something?
Ditto c3trash's question.