Надо в passive: 1)i have eaten an apple. 2)wehave cycled five miles. 3)ann has opened the present. 4)they have not read the book. 5)you have not sent the parcel. 6)they have not agreed to this issue. 7)they police have not caught the thieves.

Все предложения употреблены в Present Perfect. в passive конструкция has/have + III меняется на has/have been + III. соответственно:
1. An apple has/had been eaten(by me).
2. Five miles have/had been cycled(by us).
3. The present has/had been opened(by Ann).
4. The book hasn't/hadn't been read(by them).
5. The parcel hasn't/hadn't been sent(by you).
6. The issue hasn't been agreed(by them).
7. The thieves haven't been caught(by the police).