1. (2015九上·启东开学考) 句型转换。 

1. （1） It has been in use since 1998.(划线提问)

   has it been in use?

3. （2） The game is called Travel in Space.（划线提问）

   the game ?

5. （3） To be a good student is quite difficult.(改为同义句)

   difficult to a good student.

7. （4） Daniel bought a new printer.(改为被动语态)

   A new printer   by Daniel.

9. （5） I spent much time buying books.（改为同义句）

   It  me much time   books.