1. He already wrote an article when I called him.
2. By the time the children have gone to school.
3. He could not walk because he broke his leg.
4. Yesterday by 9 pm I finished homework.
5. The shop closed by the time I got there.
Ответ:
1-c 2-e 3-d 4g 5-f 6a 7-b
Обр при помощи вспомог глаг to be в наст времени + 4 форма глагола
1-е лицо: i am working-ед ч
we are working-мн ч
2-е л: you are working-ед ч
you are working- мн ч
3-е л.: He ,she
it is working-ед ч
they are working-мн ч