怎么改英语中的同义句there are no students in the classroom.how old are

there are no students in the classroom.
->The classroom has no students.
how old are you?
->What's your age?
what does your father do?
->What's your father's work?
can i help you?
->What can I do for you?
whose are those books?
->Whose books are those?
that is their classroom.
->Their classroom is that one.
Li Ming looks like Li Tao very much.
->Li Ming and Lin Tao look the same.
can you give the watch to me?
->Can you give me the watch?

here are no students in the classroom.
->The classroom has no students.
how old are you?
->What's your age?
what does your father do?
->What's your father's work?
can i help yo...

是转换的意思还是改正的意思？

1.There isn't any student in the classroom
2.What's the age of you?
3.What's your father's job?
4.What can I do for you?
5.Who is the owner of these books?
6.不大清楚,请给个完整的句子.
7.Li Ming takes after Li Tao very much.
8.Can you give me the watch?

No students are in the classroom.
What's your age?
what is your father ?
What can I do for you?
Those books are whose?
That classroom is theirs.
Li Ming and Lin Tao look like the same.
Can you give me the watch?