`1.` My sister started playing the piano 5 years ago.

- S + started/began + V-ing/to V + S +.... + time + ago

`2.` The postman was bitten by our dog.

- S + was/were + VpII + by + O

`3.` It’s hours since Mary wrote her composition.

`4.` We used to live in Bristol when I was a child.

`5.` My friend was awarded the first prize of the race.

`6.` Do you mind helping me move this table?

- Do you mind + V-ing

`7.`I am not used to having coffee for breakfast. 

`8.` I was having breakfast when Susan rang.

- S1 + was + V-ing + when + S2 + V2/V-ed

1. My sister started playing the piano five years ago 

2. The postman was bitten by our dog

3. It's hours since mary last wrote her composition 

4. We used to live in Bristol when i was a child

5. My friend was the winner of the race 

6. Do you mind helping me move this table ?

7. I am not used having coffee for breakfast 

8. I was having breakfast when susan rang