Ответ:

1.I have eaten five sandwiches and I'm not hungry

2.He lost his keys yesterday

3.Last year the book cost 5 dollars

4.When she was in England, she taught Russian at the University

5.I have just found the book I lost

6.They showed the movie on TV last Sunday

7.We have run 10 miles and are very tired

8.I heard they are a merried couple

9.Mum has gone shopping and will be back soon

10.I have never driven such a big car!

11.She never wore this dress when she was at University

12.I have already paid for the dictionary

13.I have brought some ice cream. Help yourself

14.The Smiths bought a new house in August

15.I have never felt so lonely in my life

16.Jack fell and broke his arm