写出下列句子的同义句。

1. My brother is interested in playing the piano .      

    My brother _____  _____  _____  _____ playing the piano.    

2. He doesn't go to work by bus. He goes to work by bike instead.      

    He goes to work _____  _____  _____  _____  _____  _____.    

3. She is so upset that she can't believe anyone.      

    She is _____  _____  _____  _____ anyone.    

4. He didn't come to school because he was ill.      

    He didn’t come to school _____  _____ his illness.    

5. The story is too difficult to understand.      

    The story is _____    ____  _____ to understand.