1. поставьте следующие предложения в вопросительную и отрицательную формы 1) he opened the window before the classes . 2) ann translated a lot of foreiqn letters at the office last week . 3) i finished work at 5 o clock the day before yesterday . 4) they returned home in the eveninq .

1) Did he open the window before the classes?
He didn't open the window before the classes .
2) Did Ann translate a lot of foreiqn letters at the office last week?
Ann didn't translate a lot of foreiqn letters at the office last week .
3) Did I finish work at 5 o clock the day before yesterday .
I didn't finish work at 5 o clock the day before yesterday .
4) Did they return home in the eveninq .
They didn't return home in the eveninq .

Кажется, как-то так)))