. I have met two of my friends today. I met them on my way to school. 2. A month ago my uncle built a new house in the country. We visited it recently and enjoyed ourselves very much. 3. He forgot to close the window when he left the house. 4. He have written several letters this week. 5. Where has Helen gone? I don't see her here. — She went home an hour ago. 6. Jack London was born in San Francisco in an extremely poor family. 7. I have never heard this story from my father.