句型转换。(20分)
（1）You shouldn't waste energy.(改为祈使句)
________ ________ ________   !
（2）She enjoys singing．(就画线部分提问)
________ ________  she________ ________？
（3）Throw the ball to Jim.(改为同义句)
________Jim the________．
（4）Do this like that.(变为否定句)
________ ________ this like that.
（5）homework，John，his，should，after，do，school(.)(连词成句)
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