Verb conjugation of "cecear" in Spanish

I ordered a cab at four o'clock in the morning which took me to the Central Bus Station. I was much to early because the bus would go just at seven o'clock. Anyway I was sitting there and listening to music.
For example, there are many regions in the United States in which only few African-Americans live. Somehow intolerance is the biggest there, because the citizens there are not used to foreigners.
About multiple translations: We want students to memorize 'idioma' and 'lengua' as they are both very common. The best we could do is to place them in 2 different lessons, so that users learn them both.