I turned off the light. I turned the light off.
I turned it off. (it)
He put on his shirt. He put his shirt on.
He put it on. (it)
She put on her glasses. She put her glasses on.
She put them on. (them)
Can you turn on the TV? Can you turn the TV on ?
Can you turn it on ? (it)
She rang up her brother. She rang her brother up.
She rang him up. (him)
We took off our shoes. We took our shoes off.
We took them off. (them)
They gave back the money. They gave the money back.
They gave it back. (it)
She put down her bags. She put her bags down.
She put them down. (them)
I switched on the engine. I switched the engine on.
I switched it on. (it)
She filled in the form. She filled the form in.
She filled it in. (it)
We put out the fire. We put the fire out.
We put it out. (it)