1 Have you spoken to him about it?No,I haven't yet(Not yet)

2 Have they finished their dinner?Yes,they have.

3 Have you cleaned the room?No,I haven't.

4 Has your aunt come back?Yes,she has.

5 Have you read this book?No ,I haven't.

6 Has the game been over?No,it hasn't yet,(Not yet)

7 Don't tell her about it!But I have already told.

8 I have already heard this story.

9 We have never been to Leningrad.