1. He can’t pass the examination.
→ He wishes he could  pass the examination.
2. Someone turned off the lights when I went out.
→ The light were turned off when I went out.
3. We can do this exercise ourselves.
→This exercise can be done ourselves
4. You do not have a brother. What do you wish?
→ I wish i had a brother.
5. People built that bridge three years ago.
→ That bridge was built three years ago.