Пжл.. помогите )))
Вставитьположительные или отрицательные формы глагола can , to be able в правильном времени.
In very early times all the people on the Earth_________speak the same language.They lived together and ______ understand each other.If we all get together we________building a great city/If we________do it everybody will be happy.They________work really fast.Nowadays people ________spea many languages but most of them_________speak English.
1. can
2. could
3. were able
4. can
5. are able
6. can
(не уверенна)
1.can
2.could
3.will be able
4.can
5.can(сомневаюсь,не вижу перехода времени)
6.can
7.can