Rewrite the sentences.
1. I started playing the piano when he was 10.
He has.............................................................................
2. People use computers to solve difficult problems. Computers.................................................................
3. I last phoned her 4 months ago. I haven't......................................................................................
4. I began to learn French in 2010. I have...............................................................
5. They have already sent the letter The letter..............................................................
6. The boys broke the window yesterday. The window........................................................................
7. I often walked to school when I was a boy.
I used.........................................................................................
8. My mother started swimming 2 years ago.
My mother has................................................................
9. Learn hard or you won't pass the exam. If........................................................................................
10. I don't know the time so I am late. If .................................................................
11. They aren’t hard-working so they get bad marks.
If…………………………………………………………….
12. Living near a market is convenient. It is………………………………………
13. Hurry up or we will be late. If………………………………….
14. She works hard so she gets promotion. If………………………………………..
15. Lan eats too much meat so she gets overweight.
If…………………………………………………………….
I started playing the piano when he was 10.
He has played piano since when he was 10.
People use computers to solve difficult problems. Computers are used to solve difficult problems