1. They saw him walk alan in the park

⇒ He was seen walk alan in the park

2. The teacher the watching the student work

⇒ The student work is being watched by the teacher

3. We smell something burn in the kitchen

⇒ Something is smelled burn int he kitchen

4. The boss has hidden Mary photocopy those the documentory

⇒ Mary has been hidden photocophy those the docmentory by the boss

5. He won't let you do that silly thing again

⇒ You will not be let do that silly thing again by him

$@Joo$

1)Him was seen walk alan in the park.

2)the student are being watched work by the teacher.

3)Something is smelled burn in the kitchen.

4)Marry has been hidden photocopy those the documentory by the boss.

5)You won't be let do that silly thing again by him.