Kate and l - don and alan - you and вставить we , you, they, he , she.

1- we
2- they
3- you
4-she
5-he

1 we
2 they
3 you
4she
5he

Present Perfect образуется при вс глагола have / has и третьей формы смыслового глагола (V3), которая называется Past Participle - причастие времени.

1. She took her temperature in the morning. (Она померила температуру утром.)

 She hasn't taken her temperature since the morning. (Она не измеряла температуру с утра.)

2. I last rode a bicycle about ten years ago. (Последний раз я ездил на велосипеде лет десять назад.)

I haven't ridden a bicycle for ten years. (Я не ездил на велосипеде десять лет / на протяжении 10 лет. )

3. Pete visited us in May last.

 Pete hasn't visited us since May.

4. She arrived in London on Saturday.

   She has been in London since Saturday.

5. Rachel and Simon got married five years ago.

  Rachel and Simon have been married for five years.

6. It’s three weeks since I consulted the doctor.

   I haven't consulted the doctor for three weeks.

7. We got a letter from Tom in autumn last.

 We haven't got/received a letter from Tom since autumn.

8. It’s two years since we were at the seaside.

  We haven't been to the seaside for two years.

9. We had our last English class before the teacher fell ill.

   We haven't had our English class since the teacher fell ill.

10. He got into prison in 1980.

     He has been in prison since 1980.

1. Despite the apparent properties of compound semiconductors, their general use *has not been* great because of several limitations. -

Несмотря на очевидные характеристики составных полупроводников, их общие использование не распространено из-за некоторых ограничений.

*has not been* - Pr. Perfect Active

2. The potential difference across the junction *had been increased*.

Увеличена разность потенциалов на переходе.

*had been increased* - Past Perfect Passive

3. Magnetic amplifiers *have been employed* for some 50 years; transistors *were reported* upon in 1948.

Магнитные усилители используются уже около 50 лет; о транзисторах было сообщено в 1948 году.

*have been employed* - Pr. Perfect Passive

*were reported* - Past Simple Passive

4. Sometimes a decision to compute *is followed* by a process of selecting the particular kind of computing machine, which best *suits* for the given problem.

Иногда за решением о вычислении следует процесс выбора конкретного типа вычислительной машины, который лучше всего подходит для данной задачи.

*is followed* - Pr. Simple Passive

*suits* - Pr. Simple Active

5. Our rockets, the first in the world, *were being sent* to other planets.

Наши ракеты, первые в мире, отправлялись на другие планеты.

*were being sent* - Past Continuous Passive

6. This problem *must be approached* from another point of view.

К этой проблеме нужно подойти с другой точки зрения.

*must be approached* - Present Simple Passive

7. This job *cannot be done* for a short period, you *need* at least a month.

Эту работу нельзя делать за короткий срок, нужен минимум месяц.

*cannot be done* - Present Simple Passive

*need* - Pr. Simple Active

8. It *is* 20 years since he *left* home, and he:* has never been heard* of since.

20 лет с тех пор, как он ушел из дома, и с тех пор о нем никто не слышал.

*is* - Pr. Simple Active

*left* - Past Simple Active

*has been heard* - Present Perfect Passive

9. Tell him he *is being waited* for.

Скажите ему, что его ждут.

*is being waited* - Present Continuous Passive

10. L. Carroll *is remembered* not as a mathematician but as the author of Alice in Wonderland

Л. Кэрролла помнят не как математика, а как автора «Алисы в стране чудес».

*is remembered* - Pr. Simple Passive