Ответ:

  1. My friend enjoys reading adventure books.
  2. I usually play basketball with my classmates after school.
  3. Alina goes to a music club twice a week.
  4. Nikita can ride a bike very well.
  5. We often go outside when the weather is warm.
  6. Masha likes drawing because it helps her relax.

После enjoy употребляется форма с окончанием -ing; после модального глагола can используется начальная форма глагола.