根据要求完成句型转换。

1. People tell me how I can get to the station.

   People tell me how ______ ______ ______ the station.

2. Mike didn't see anybody enter the building before ten.

   Nobody ______ ______ ______ ______ the building before ten.

3. The bench was so long that all of us were able to sit on it.

   The bench was long enough ______ ______ ______ ______ ______. 

4. I think that it is important to master a foreign language.

   I think ______ ______ ______ ______ a foreign language.

5. Mary spent three thousand yuan on the color TV set.

   The color TV set ______ ______ three thousand yuan.