Read and divide the words into four groups.

• Группы
  • /i:/
  • /e/
  • /ɜ:/
  • /iə/
• Варианты
  • see
  • tree
  • agree
  • free
  • set
  • men
  • blend
  • rent
  • herd
  • serve
  • term
  • alert
  • severe
  • sincere
  • career
  • atmosphere