句型转换。

1. The book is very useful. ( 改为感叹句 )

   _____ _____ the book is!

2.  Marry was playing the piano at this time yesterday. ( 对划线部分提问 )

   ______ _____ Marry ______ at this time yesterday?

3. He is so young that he can't go to school. ( 改为同义句 )

     He is ______ ______ ______ go to school.

4. How much is this car?( 改为同义句)

     ______ the ______ ______ this car?

5. He will come back in a week. ( 对划线部分提问 )

   ______ ______ will he come back?