

Сейчас у нас урок математики.
We have a math lesson now.
Когда начинается урок?
When does the lesson start?
Этот урок очень трудный.
This lesson is very difficult.
"урок" is in the lesson "Education" (Level 35), along with 10 other useful words. LinDuo has 180 topic lessons like this one, 2,380 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.