1. Dan's parents have not come home yet.

2. Who has spent holidays at the seaside?

3. Have you ever eaten smoked fish?

4. My aunt has been on a low fat diet for a year.

5. How much money has david spent recently?

6. Has Liz been to Russia?

7. We have already told our new friends about native town

8. Who has recently to mr brown?

9. I have not heard this new song yet

10. since when have you known jack?

11. has mother alredy put the plates in the table?

12. how long today have you worked in the office?