1. I have been smoking for 10 years and yesterday I decided to give it up. But I failed.
2. Why is the earth wet? because it has been raining all night.
3. I have never told him that he is very clever but i have been always thinking so.
4. They have finished eating and they are drinking coffee now.
5. It was a hot day. The wind was blowing, the flies were buzzing. the butterflies were flying.
6. Athur came into the room. Nothing had been changed since his departure.