mengubah kalimat menjadi kalimat passive voice

1. komodo protected by government constitution.
2. the money keep by her/his wallet
3. the computer made it by indonesia
4. the questions can get the answer is easy by all the students.
5. she will move in australia by the higher education
6. I'm sometimes give the money by someone
7. The bicycles uses by many people in the world
8. the letter had been sent by post officer.

1. (not sure)
2. the money is kept in his/her wallet
3. that computer was made in indonesia
4. the questions can be answered easily by the students
5. he/she will be sent to australia to get a higher education
6. (not sure)
7. bicycles are used by a lot of people around the world
8. that letter has been sent to the post office