Английский язык, вопрос задал alenadanilenko55 , 7 лет назад

They __________at Heathrow airport for already three hours.

Выберите один ответ:
a. are being
b. have been
c. being

Ответы на вопрос

Ответил VHawkV
1

They __________ at Heathrow airport for already three hours.  

b. have been    

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