Choose have or has

• Группы
  • have
  • has
• Варианты
  • I _____ been translating this text since 2 o'clock.
  • My sister ____ been helping mum for a long time.
  • These boys ______ been watching the DVD for half an hour.
  • We _____ been discussing it for an hour and a half.
  • Our parents ____ been driving home for an hour.
  • His friend ___ been waiting for him since 4.
  • She _____ been walking for 2 hours.
  • Our mum ____ been working since 8 am.