operetta造句怎么写

The operetta is about a girl named Bettina who is sent to take care of the turkeys of an unlucky farmer by the farmer's brother.

He then left the stage to let an imaginary Bernstein conduct the piece, the overture to his operetta "Candide".

Right at the end of 1880 an operetta called la Mascotte played first in French and then in English in 1881 introducing the English speaking world to the word mascot.