1. The word is "Crust". :)
2. You enroll IN something. However, your example of "cooking" doesn't make sence, as the word enroll means "to be initiated into", into a club for example ("I enrolled in the fishing club".
3. That is a tricky one, it could be one of two tenses:
- Did you see any movies recently? - lately doesn't work in this sentence
- Have you gone anywhere lately? - Retains the "lately", but changes the tense slightly.
Student or Learner