Back to input mode User guide

It seems like you’re trying to submit a blank exercise. Please try to solve the exercise and then submit it!

Sign in

Sign in

Registration Forgot password?

  Lesson

12.1

Lesson statistics No cup earned
  • 0 star(s) earned
  • 0 medal(s) earned
  • 0% solved
Write test Back to curriculum

12.1

  • 1.
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.

  • 11.
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.

  • 19.
  • 20.
  • 21.
  • 22.
  • 23.
Previous lesson Next lesson
Back to curriculum

You haven’t saved any solutions for this exercise category. .

Practice
Just a second; loading will soon be complete. Almost there. Let’s wait a little longer. Something seems to be slow here. Is your WIFI OK? Just a little more patience. Or has it finished loading already? Shall we wait longer? Have your downloads ever been this slow? Dunno’ what to say. Are you downloading something? Well, if the the internet connection is otherwise OK, try reloading the page. Or wait a little longer. I’m out of ideas. I hope it’s going to finish loading soon. Something’s broken. Please try reloading the page.
BESbswy BESbswy