8. Раскройте скобки, употребляя глаголы в требующемся времени. 1. Не ( to begin ) to write his composition at three o’clock.

1. Не began to write his composition at three o’clock. 2. It’s already eleven, and he is still writing the letter. 3. We have been helping our librarian to put the books in the right order for already three days, but we have arranged only half the books. 4. What were you doing when I came in? 5. When I left home, the snow has already stopped.