句型转换It is impossible that a child can lift such a heavy box.
It is impossible __________ __________ __________ __________ __________ such a heavy box. It happened that you had known each other be-fore.
You happened __________ __________ __________ each other before. He said, “I have been told about the news .”
He was said __________ __________ __________ told about the news. The teacher made the student stand all the time.
The student was __________ __________ __________ all the time by the teacher. They saw her enter the room.
She __________ __________ __________ enter the room by them.