1. My grandpa was a teacher, wasn't he?
2. Is it raining now?
3. Does it often rain here?
4. Is she running in the park now?
5. Who knows his adress?
6, Did he take a book?
7. The Green family's children don't go to school.
8. A puppy is swimming.
9. What a short jeans!
10. There is a letter for you.
11. Where's a letter?