It has been in use since 1998. (划线提问)
it in use?
I don’t like winter because it is too cold.(划线提问)
like winter?
To be a good student is quite difficult. (改为同义句)
difficult to a good student.
Daniel bought a new printer. (改为被动语态)
A new printer Daniel.
I spent much time buying books. (改为同义句)
It me much time books.