He says that it's important to learn English well.改成被动语态急

He says that it's important to learn English well.改成被动语态急
He says that it's important to learn English well.改成被动语态
急

He says that it's important to learn English well.改成被动语态急
It's said that it's important to learn English well by him

It is said by him that it's important to learn english well