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.