Tom entered a contest（by） singing popular English songs

Tom entered a contest（by） singing popular English songs Our English teacher often helps us leanr by singing songs. a singing contest是什么意思 Singing English songs is a good way ( )(提高) your English. Singing English songs made me I like singing English songs give a singing contest是什么意思? she take_______in a singing contest. Singing English songs is a good way to learn English用it作形势主语 Singing English songs is a good way to learn English.改为同义句 which english songs are most popular now? they are singing English songs.为什么用singing