按要求写句子。

1. When he returns to Paris, he will write to you. (改为同义句) 

    When he ____ ____ to Paris, he will write to you.

2. I'm staying in Shanghai for two months. (对画线部分提问） 

    ____ ____ are you staying in Shanghai?

3. He went to Hong Kong with his father last week. (同上）

     ____ ____ he ____ to Hong Kong with last week?

4. They are going to Australia for vacation. (同上)

    ____ ____  they ____ to Australia  ____？

5. He sent a postcard to his friend on May Day. (改为同义句)

   He ____ ____ ____ ____  ____ on May Day.