my brother can sing and dance 否定句

my brother can sing and dance 否定句 my sister can sing and dance(作否定句) my sister can sing and dance(变否定句) she can sing and dance 否定句 Tom can sing and dance.（改成否定句） She can sing and dance well(改为否定句) she can sing and dance.( 改为否定句） She can sing and dance.(改为否定句)给好评. Liu Shumeng can dance and sing.改为否定句 i can dance and sing（改为否定句） Lily can sing and dance.(改为否定句） The boy can sing and dance.改为否定句