Поставьте данные слова в правильном порядке, чтобы составить предложения. есть несколько лишних слов, которые вам не нужны​

1. I've known my best friend _for 15 years.

a) for

b) since

2. __since ___ last Christmas, I haven't eaten any chocolate.

a)for

b)since

3. He's been sick __since ___ the last week.

a)for

b)since

4. Bob's worked there __since___ 1984.

a) for

b) since

5. I've been telling you to hurry up __for___ the last 30 minutes!

a)for

b)since

6. My mother has been trying to call me __since___ last week.

a) for

b) since

7. They have been colleagues __for ___ a long time.

a)for

b)since

8. He has been studying Russian ___for __ a few months.

a) for

b)since

9. I haven't seen her __since ___ last year.

a)for

b) since

10. I've been angry at him __since___ a couple of weeks ago.

a) for

b)since​

Объяснение: