按照要求完成下列句子。

1. Mike has some books. (改为否定句)

   Mike _______ six books.

2. My pen friend lives in England. (对画线部分提问) 

   _______ your pen friend _______?

3. Helen is my friend. Amy is my friend, too. (合并为一句)

    Helen and Amy _______ my _______.

4. My pen is seventeen yuan. (对画线部分提问) 

    _______ your pen?

5. It's five thirty now. (写出同义句)

    It's _______  now.