Example: you/post/invitations? Have the invitations been posed? 1. You/pay/the bills? 2. You/type/the letters? 3. You/translate/the articles? 4. You/visit/exhibitions? 5. You/repair/ the computer? 6. You/copy / the documents? 7...

1.have the bills been payed? 2.have the letters been typed? 3.have the articles been translated? 4.have exhibitions been visited? 5.have the computer been repaired? 6.have the documents been copied? ...

1. Have the bills been paid? 2. Have the letters been typed? 3. Have the articles been translated? 4. Have exhibitions been visited? 5.  Has the computer been repaired? 6. Have the documents been copied? 7. Has the  text been translated? 8. Have the articles been published? 9. Has the program been installed? 10. Have the mistakes been corrected?