Поставьте следующие предложения в отрицательную и вопростельную формы. he opened the window before classes. ann translated a lot of foreign letters at the office last week. i finished work at five o'clock the day before yesterday. he lived in omsk five years ago. they returned home in the evening. they discussed a lot of articles from these french magazines last weekend.

1)He didn't open the window before classes.     
Did He open the window before classes?
2)Ann didn't translate a lot of foreign letters at the office last week.
did Ann translate a lot of foreign letters at the office last week?
3)I didn't finish work at five o'clock the day before yesterday.
Did I finishwork at five o'clock the day before yesterday.
4)He didn't live in Omsk five years ago.
did he live in Omsk five years ago?
5)They didn't return home in the evening.
Did They return home in the evening?
6)They didn"t discuss a lot of articles from these French magazines last weekend.
Did They discuss a lot of articles from these French magazines last weekend.