2. He has never flown in a Concorde.
3. Have you ever heard of that?
4. Jane hasn't always lived in the city.
5. Where have you been all this time?
6. It's the first time the children have visited London.
7. Why haven't you done your homework?
8. I think we have bought everything we need for the cake.
9. She doesn't know where your wallet is. She hasn't seen it.
10. Where have you put all the CDs?
