根据括号中的要求改写下列句子。

1. I have read the other Harry Potter books already. (改为否定句)

    I ______ the other Harry Potter books.

2. He has worked in this company for five years.

   ______ ______has he worked in this company? (就画线部分提问)

3.They have traveled  around the world. (改成一般疑问句)

   ______they______around the world?

4. Have you entered a competition? (作出否定回答)

    No.I______.

5. She has played concerts all over the country.(改成一般疑问句)

    ______she______concerts all over the world?