

Is it ok if I sit here?
[ˈɪz ˈɪt ˈoʊˈkeɪ ˈɪf aɪ ˈsɪt ˈhɪr?]
That's ok, don't worry about it.
[ˈðæts ˈoʊˈkeɪ, ˈdoʊnt ˈwɜri əˈbaʊt ˈɪt.]
Are you ok? You look sad.
[ər ˈju ˈoʊˈkeɪ? jə ˈlʊk ˈsæd.]
"ok" is in the lesson "Conversation" (Level 36), along with 15 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.