Customers have to fill out forms which (mail)______to them.are mailed本句有which引导的

游客2023-10-06  27

问题 Customers have to fill out forms which (mail)______to them.

选项

答案 are mailed

解析 本句有which引导的定语从句,其逻辑主语forms“表格”与mail“邮寄”之间是逻辑上的被动关系,表格只能是被寄送给顾客的,所以此处用被动语态。还要注意forms是复数形式,被动语态中的be动词也要用复数。主句是一般现在时态,所以填入are mailed。
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