5 Read and compare. past continuous past indefinite He sold his car yesterday. - - They moved into a new flat He was selling his car at 4 o'clock yesterday. - I couldn't reach them as they were moving into a new flat. The boys were fighting when their father came in. While Nelly was speaking to her cousin, I was writing a letter. 3 weeks ago. Alec fought with his brother last Sunday. I wrote 3 letters the day before yesterday.
The United States stretches from the Pacific Ocean to the Atlantic Ocean. Long mountain chains run down the Pacific coast. In this part of the country you can find Death Valley, the lowest place in North and South Americas. There are tall peaks of the Rocky Mountains that run from Canada to Mexico. Beyond them stretch the Great Plains where the mighty Mississippi River flows. Another mountain chain, the Appalachians, runs down the eastern part of the United States. The USA borders with Canada in the north and Mexico in the South.