Complete the sentences. Use for, since, all day. 1) The boys are tired. They have been playing basketball ... an hour and a half. 2) Alex has been talking on the phone ... 5 o'clock. 3) The telephone has been ringing ... . 4) Mr Williams has been writing his book ... half a year and he hasn't finished it yet. 5) People have been working on this problem ... the beginning of the century. 6) John has been washing his car ... nine o'clock this morning. 7) Sarah has been writing her project ... 8) We have been learning the poem ... an hour and a half.

Выполним задание, используя предложенные слова for, since, all day.

1. The boys are tired. They have been playing basketball for an hour and a half.
2. Alex has been talking on the phone since 5 o'clock.
3. The telephone has been ringing all day.
4. Mr Williams has been writing his book for half a year and he hasn't finished it yet.
5. People have been working on this problem since the beginning of the century.
6. John has been washing his car since nine o'clock this morning.
7. Sarah has been writing her project for an hour and a half.
8. We have been learning the poem for an hour and a half.

Ответ: смотри решение выше.