1) What did you do when the accident occurred?

I called Michael.

2) Next weekend we will go to an art exhibition.

3) I went to England six months ago.  I started my English course three months ago.

4) Be quiet! Joh is sleeping.

5) Listen Jane, I don't care that you missed the bus this morning. You were late to work yesterday morning too.

6) In the last 100 years, traveling has become much easier and very comfortable. In the 19th century, it took two or three months to cross North America; the trip was often dangerous. Things have changed a great deal lately.

7) Mark's English has improved. He usually watches American television programs and studies grammar every day. Soon he will be totally fluent.

8) When I arrived home last night, Jane prepared a special dinner.

9) My mother used to call (or called) my father at work every day when they were young, but today she does not call him.

10) Three days ago, Meg began to read Little Women. She did not finish it. Now she surfs the net for the summary of the novel because she thinks she has a test.

Good luck with your English studies Marco!!  :-)