Решение:
Давай выполним упражнение. Здесь нужно вставить подходящие слова: for, since, all day.
- The boys are tired. They have been playing basketball for an hour and a half.
- Alex has been talking on the phone since 5 o'clock.
- The telephone has been ringing all day.
- Mr Williams has been writing his book for half a year and he hasn't finished it yet.
- People have been working on this problem since the beginning of the century.
- John has been washing his car since nine o'clock this morning.
- Sarah has been writing her project for ... .
- We have been learning the poem for an hour and a half.
Ответ: 1) for; 2) since; 3) all day; 4) for; 5) since; 6) since; 7) for; 8) for
Ты отлично справился с этим заданием! Продолжай в том же духе, и у тебя всё получится!