1. I don’t have many friends. ->I wish I had many friends

2. They work slowly. ->I wish they worked fast

. 3. I am not good at English.-> I wish I were good at English

4. He studies badly. ->I wish he studied well

5. He doesn’t like playing sports. ->I wish he liked playing sports

6. Mary started playing the piano when she was 6.-> Mary has played the piano since she was 6

  7. She last went shopping last month. ->She hasn’t gone shopping since last month

8. The last time I met her was two weeks ago. ->I haven’t met her for two weeks

9. We have never seen this movie before. ->It's the first time I have seen this movie

10. It's a week since they cleaned their room. ->They haven't cleaned their room for a week

11. Study hard or you will fail the exam.-> If you don't study hard, you will fail the exam

12. Hurry up or you will miss the bus. ->If you don't hurry up, you will miss the bus

 13. If you don't finish your homework, you can't go to bed. ->Unless you finish your homework, you can't go to bed

14. I don't have enough money, so I can’t buy this book. ->If I had enough money, I could buy this book

15. Mary can't go to the party because she has to do her homework. ->If Mary didn't have to do her homework, she could go to the party

16. People make cheese from milk. ->Milk is used to make cheese

17. Tom broke the flower vase last night.-> The flower vase was broken last night

18. My mother is cooking dinner now. ->Dinner is being cooked by my mother now

19. We should keep the environment clean. ->The environment should be kept clean

20. No one has used this computer for a long time. This computer hasn't been used for a long time

 1.I wish I had many friends

2. I wish they worked fast

 3. I wish I were good at English

4. I wish he studied well

5. I wish he liked playing sports

6.  Mary has played the piano since she was 6

  7. She hasn’t gone shopping since last month

8. I haven’t met her for two weeks

9.  It ' the first time I have seen this movie

10. They haven't cleaned their room for a week

11. If you don't study hard, you will fail the exam

12.If you don't hurry up, you will miss the bus

 13. Unless you finish your homework, you can't go to bed

14. f I had enough money, I could buy this book

15. If Mary didn't have to do her homework, she could go to the party

16. Milk is used to make cheese

17. The flower vase was broken last night

18. Dinner is being cooked by my mother now

19.The environment should be kept clean

20 .This computer hasn't been used for a long time