Question

Change the voice: 
He had transported all his equipment to his factory.

Accepted Answer

All his equipment had been transported by him to his factory.

Answer

All his equipment are transported to his factory try him.

Answer

All his equipment were transported to his factory by him.

Answer

All his equipment have transported by him to his factory.

Q. Change the voice:
He had transported all his equipment to his factory.

Discusssion