It took him two hours to finish his homework. (改为同义句)
He two hours his homework.
He put off the plan till next week. （改为一般疑问句）
he off the plan till next week？
The story was so touching that they all cried along with it. （改为同义句）
It was touching story they all cried along with it.
The Blacks got married thirty years ago. （改为同义句）
The Blacks have for thirty years.
Documentaries are less funny than comedies. （改为同义句）
Documentaries funny comedies.
I heard a girl sing in the next room.（改为被动语态）
A girl heard sing in the next room.