Question

【题目】These cake (eat) already by Mary.

Answer 1

【答案】has been eaten
【解析】这些蛋糕已经被Mary吃了。根据句意，可知用被动语态且already是现在完成时的标志词，现在完成时的被动语态结构是：have（has） been done，主语是cake单数，故填has been eaten。