1. 句型转换，根据要求改写下列句子。

1. （1） Have you worked out the maths problem?(作否定回答)
3. （2） Jim finished his homework. (用现在完成时改写句子)

   Jim  his homework.

5. （3） He has come into the classroom. (改为同义句)

   He   the classroom.

7. （4） He has answered all the questions. (对划线部分提问)

     he ?

9. （5） The prize is a fantastic holiday. (对画线部分提 问)

     the prize?