1.  Aren't you readingDon't you read this bestseller?

2. “You  are lookinglook pensive, John.” “Yes, Lucy. I  am wonderingwonder why I received that strange letter this morning…”

3. The Sun  is risingrises in the East and  is settingsets in the West. On June 21st, here in Stonehenge, it  is risingrises exactly between these two standing stones.

4. “What  are you doingdo you do Tom? You  are seemingseem to be pretty busy!” “Sure, I  am workingwork on a very important research project.”