`text{1.Some trees haven been planted in the garden by my mother.}`

`text{2.I wish she had a computer.}`

`text{3.They started repairing the house 2 years ago.}`

`text{4.I wish this test weren't difficult.}`

`text{5.A new car has been bought by my father.}`

`text{6.I wish she could sing english songs.}`

`text{7.My father began working here three years ago.}`

`text{8.I wish Ba didn't go to work late today.}`

1. some trees in the garden have been planted by my mother

2. i wish she had a computer

3.they started repairing this house for 2 years

4. i wish this test was not very difficult

5. a new car has been bought by my father      

6.i wish she could sang english song 

7. my father began worked here three years ago

8.i wish ba went to work early today