Придумай грамматическое задание к тексту: We are always told that we should clean our teeth regularly to keep them healthy and to have fresh breath. It is believed that people started using a kind of paste to clean their teeth around 5000 years ago. However, the ingredients of these tooth powders were very different from ours. For example, the people of ancient Egypt used salt, mint, dried flowers and pepper to create tooth powder. Later, in the 18th century, in some countries in Europe, people brushed their teeth with burnt bread. The first toothpaste appeared in 1890, in Great Britain. At first it was sold in jars. Then special tubes were designed to make the toothpaste more comfortable to use.

1. for; 2. since; 3. since; 4. for; 5. since; 6. since; 7. for; 8. for; 9. for; 10. since.

Объяснение:

Предлог for обозначает период, на протяжении которого длилось событие и указывает на то, что действие происходило в течение определенного времени. Предлог since указывает на то, когда началось действие, служит его отправной точкой. ИНОГДА since может заменяться на предлог from с временами perfect, когда необходимо подчеркнуть значение «начиная с этого времени».

Зная это, легко ответить на вопрос:

1. I've been working at this company for five years.

2. That restaurant has been open since this morning.

3. Kate has lived here since 2012.

4. It has been raining for a long time.

5. The TV has been on since five o'clock.

6. I have wanted to be a doctor since I was a kid.

7. Sam has studied at this college for only a week.

8. The telephone has been ringing for a few minutes.

9. Maria and Eduardo have been married for three months.

10. My uncle has been in the hospital​ since last Tuesday.

2. Drive

3. Didn't finish

4. Were you busy

5. Did she buy

6. I wanted to go

7. Were you late

8. Who did you talk to

9. Where were you

10. I read

11. Flew

12. He wasn't

13. Didn't i

14. What did you do

15. Did they have

16. Were you in class

Объяснение: was/were - это глагол to be в времени. В русском мы скажем он был дома, или она была красивая. В английском мы скажем это с глагола to be. Он (was, был) красивый. Она (were, была) красивая. Wad используется для it, she, he. Were для they, we, you. Past simple. Простое время, которое когда-то произошло и закончилось (осталось в Повествовательные предложения строятся при правильных глаголов с окончанием ed. К неправильным глаголам данное окончание не идёт, их форма указана в специальной таблице. Например, bought- не правильный глагол форма глагола buy. Waited-правмльный глагол форма от глагола wait. Отрицательные предложения времени образуются с вс глагола did not. Вопросительные предложения времени образуются с вс глагола Did. Did you buy this scarf yesterday?

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