tolong dibantu ya, nomer 1-5

1. this book will be observed by... 
2. this letter was written by... 
3. Her magazine was found by ,,, 
4. The letter was written by ... 
5. The interview was done by... 

1) It will be observed by my brother
2) it is always written by the uncle
3) it has been found by Ranto
4) It was being written by father
5) I was interviewed by the man