Translation:Where can we buy a phone card?
We call it a calling card, but Duo does not accept that answer. allows you to use someone elses phone for long distance calls. Was very popular for kids in the US to be able to call their parents or for people with limited phone service in other countries to call (some one would send a card to China and they could call their relatives for the US rate.
Phone cards are used to make international phone cards around pre-2010-ish.
Living in the US, in an asian household, we'd often buy them to phone back home in Asia (for me, Korea). Asian grocery stores would generally sell them here.
Talking to my asian immigrant friends, their families did the same.
This must be one of the worst lessons in terms of the paucity of answers they will accept. It won't even take telephone card instead of phone card. What the hell of a difference does that make? I understand full well what the Chinese says. I know what a &4%#@* phone card is.
I finished this course a few months back and come back to practice. But nothing seems to have changed for years here (At least 3 years). Do they do maintenance, or read the comments, or even read the answer you give when you report? The rest of the course is good but I still being marked wrong for actually being correct a complete pain! It takes the fun away.
In English, an article (a/an/the) should be used before a "thing" (dog/phone card/book) when it is in singular form.
You would not say:
"Where can we buy dog?" or "Where can we buy phone card?"
You would say:
"Where can we buy a/the dog?" or "Where can we buy a/the phone card?"
If the thing is in plural form then you don't need an article. "Where can we buy dogs?" "Where can we buy phone cards?"