how to distinguish on/in/at.........?
I don't know how to use the preposition, like on/in/at/of and so on.
which one is right that "on italki"/"in italki"/"at italki"?

Question

how to distinguish on/in/at.........?
I don't know how to use the preposition, like on/in/at/of and so on.
which one is right that "on italki"/"in italki"/"at italki"?

Answer

If you are trying to say you are using the italki website, you would say, "I am on italki." I hope this helps!

Answer

Here's a video lesson
http://www.engvid.com/prepositions-how-to-use-in-at-and-on-in-english/