1. We graduated from the Institute in 1987.
2. My friend went to England to work for a probationary period three months ago.
3. I was on holiday in Bulgaria two weeks ago.
4. A friend of mine wrote a new operating system two months ago.
5. I was fond of swimming two years ago.
6. Tom forgot to remind me of the forthcoming lecture at Moscow State University yesterday.
7. I ate an apple, drank a glass of lemonade and went to school.
8. I wrote three novels last year.
9. I saw a lion in the zoo yesterday.
10. She was my bride in 1999.
11.He saw her
12.He left yesterday
13.She didn’t enjoy the meal
14.He didn’t look at us
15.She wasn’t in the office