单词变换形式写出下列单词的单三和-ing形式sit play write make help begin borrow

三单：sits,plays,makes,helps,begins,does,watches,goes,has,tries,listens,keeps,studies,sings,sees,is/am/are.wishes,
动明：sitting,playing,making,helping,beginning,doing,watching,doing,having,trying,listenning,keeping,studing,singing,seeing,being,wishing

三单：sits，plays，makes，helps，begins，does，watches，goes，has，tries，listens，keeps，studies，sings，sees，wis