Ответ:

1) 1. My bicycle has been stolen.

2. The office will be cleaned later.

3. A new computer system is being used to investigate crimes.

4. Twenty books were destroyed...

5. A lot of questions were being asked by the journalists.

6. Ten silver rings have been sold today.

7. A wallet full of money was found yesterday.

8. Miss Jenkins, the head teacher, will be remembered by the students at our school.

2) 1a hadn't been informed

b hadn't informed

2a am following

b am being followed

3a donate

b is donated

3) 1. is being elected

2. Was (the case still) investigated

3. has (just) been employed

4. are ... organised

5. had been offered

6. is ...excluded

7. will be found (у вас правильно)

8. has been raised