句型转换（每空一词）。

1. My father has been to Japan three times.(对画线部分提问)

   ______ ______ ______  your father been to Japan?

2. The young man travelled there by plane.(对画线部分提问)

   ______ ______ the young man ______ there?

3.The girls are having a wonderful time in China.(改为同义句)

   The girls are ______ ______in China.

4. My uncle flew to Beijing yesterday.(改为同义句)

    My uncle ______ to Beijing ______ ______ yesterday.

5. Since then over 400 million people have visited Beijing. (改为同义句)

    Since then ______ ______ 400 million people have visited the ______ ______ Beijing.

(2)运用唯物辩证法基本范畴的相关原理来分析世界油价涨跌与经济增长之间的关系。