补全对话，选项中有两项多余A.Whatisyourfavoritesubject？B.Becauseit'si...
问题详情：补全对话，选项中有两项多余isyourfavoritesubject？useit'sinteresting.theyyourfavoritesubjects？'sverykind.useit'sinteresting.esday.，whoisyourartteacher？Betty：What'syourfavoriteday?Anna：1.______Betty：W...