Mary is good at playing the piano.（改为同义句） Mary（ ）well（ ）play

Mary is good at playing the piano.（改为同义句） Mary（ ）well（ ）play Mary is good at music(改为同义句） Sam is good at playing the piano.改为同义句 Sam is good at playing the piano.(改成同义句）Sam ?the piano? mary is good at[ ]the piano A.play b.plays c.playing d.to pl Sam is good at playing the piano.改为同义句 sam___ ___the piano _ Mary is good at running（同义句转换） Mary is good at flying kite.（改为否定句） She is Mary.（改为同义句） ______ _________is mary. 改为同义句：Mary is good at dancing. She can play the piano very well(改为同义句） Mary is good at singing.(改为同义句)Mary ___ ___