1. She had written the letter by 3 pm yesterday.

2. We had finished the task by 6 o'clock.

3. Our University had bought that equipment by September.

4. We had finished our conference before the guests from Spain came.

5. The student had written his test before the bell rang.

1. Вчера она написала письмо к 15 часам.

2. Мы закончили задачу к 6 часам.

3. Наш университет купил это оборудование к сентябрю.

4. Мы закончили нашу конференцию до приезда гостей из Испании.

5. Студент написал тест до того, как прозвенел звонок.

negative

1.She had not written the letter by 3 pm yesterday.

2.We had not finished the task by 6 o'clock.

3. Our University had not bought that equipment by September.

4.We had not finished our conference before the guests from Spain came. 5.The student had not written his test before the bell rang.

interrogative

1. had she written the letter by 3 pm yesterday?

2. Had we finished the task by 6 o'clock?

3. Had our University bought that equipment by September?

4. Had we finished our conference before the guests from Spain came?

5. Had the student written his test before the bell rang?