"I will make cards for you."
Translation:Tôi sẽ làm những tấm thiệp cho bạn.
The hint says 'cards' is 'những thiệp' but only 'những tấm thiệp' is accepted.
I wish they would give us a list of classifiers! that seems like a pretty specific classifier, as opposed to "people" or "animals" or "clothes"
someone did post about it, it's exhaustive enough for the most used classifiers.
thiệp is referring to invitation cards (thiệp mời), business cards (danh thiếp), whereas thẻ is more of debit or credit cards (thẻ tín dụng), phone cards (thẻ gọi điện thoại), permanent resident/green card (thẻ xanh), health card (thẻ bảo hiểm sức khỏe), etc.