Match the words to their meanings

• Объекты 1
  • boost
  • brain
  • concentration
  • eyesight
  • complain
  • optimistic
  • soothe
• Объекты 2
  • something that makes you feel more confident and happy, or that helps something increase or improve
  • the organ inside your head that controls your thoughts, feelings, and movements
  • the ability to think carefully about something you are doing and nothing else
  • the ability to see
  • to say that something is wrong or that you are annoyed about something
  • always believing that good things will happen
  • to make someone feel calm or less worried