did he sing songs?为什么不是sang呢?
did he sing songs?为什么不是sang呢?
He sing songs.
that ____(sing) sang four songs at the contert
He ______ sing English songs.
he stood on his head and sang songs
He can sing many English songs
He can sing some songs 否定回答
he can a( ) sing English songs
He can sing some songs 肯定回答
she can sing many songs中为什么主语是第三人称单数而sing后面却没有加s呢?
sing( )songs
翻译句子:___ he walked ___,he sang songs one after ___