Контрольные задания > 7) We ... for three hours before we decided to take a break.
a) must be trekking
c) will have been trekking
b) had been trekking
d) have been trekking
Вопрос:
7) We ... for three hours before we decided to take a break.
a) must be trekking
c) will have been trekking
b) had been trekking
d) have been trekking