8.　　　 -----When have you entered the concert?　 (　　 )

-----Last night.

7. We have planted some trees yesterday. (　 )

6. I have bought a new dictionary but I have lost it.　 (　　 )

5. Mr Smith hasn’t already had breakfast.　 (　　 )

4. Did you seen this film yet? (　　 )

3. -Have you had your lunch？ -No yet．(　　 )

2. I've been in Australia twice.　 (　　 )

1. We learned about six hundred English words so far．(　　 )

10. He has finished writing the story. (对划线部分提问)

　 _______ _______ he _______?

下列各句均有一处错误，请划出并改正。

9. We have been to Yang Shuo twice. (改为一般疑问句)

　 _______ you ______ to Yang Shuo twice?