Chuyển câu sao cho nghĩa không đổi

11. "I'll take you to the zoo tomorrow" my mother said to me.
>My mother told ..
12. They don't know where they should put the sofa. =>They don't know where..
13. I've never seen such a bad film as that one. =>That's the ...
14. She studied hard for the exam because she wanted to get good grades.
=> She studied hard for the exam so that...
15. "Please, help me to make a decision" Ann asked her friend.
=> Ann asked her friend...