.Выполнить упражнение(выбрать for, since,all)
I have been working on the computer for/since/all six o`clock.
Alice has been reading his book for/since/all afternoon.
Jess has been learning English for/since/all five years.
Where is the bus? We`ve been waiting here for/since/all twenty minutes.
The weather is awful! It`s been raining for/since/all day.
My mother has been cooking for/since/all ten o`clock.
The boys have been playing football for/since/all an hour.
Выполнить упражнение (выбрать for, since,all)
I have been working on the computer since six o`clock.
Alice has been reading his book all afternoon.
Jess has been learning English for five years.
Where is the bus? We`ve been waiting here for twenty minutes.
The weather is awful! It`s been raining all day.
My mother has been cooking since ten o`clock.
The boys have been playing football for an hour.