Tick all grammatically correct sentences:

  • Anthony had
    been waiting for his airplane for 3 hours when its delay was announced.
  • How long have
    you been watching TV before you decided to go to bed?
  • I saw many
    huge puddles. Had it rained hard?
  • Paul and
    Molly had been talking on the phone for an hour when the line broke.
  • Rachel’s
    husband had fixing the car since early morning.
  • Rita had
    been training for a year and she was very fit when her ex-boyfriend met her.
  • Sally had typed this text for 3 hours before Mark
    came.
  • Sam did
    not even realize what a hard time Molly had been having.
  • Steven
    felt tired as he had be sailing for several hours.
  • Zina tried
    to find her mother for years but she failed.

К сожалению, у нас пока нет статистики ответов на данный вопрос, но мы работаем над этим.