You cannot cancel your order______you change your mind within three days.A、as if

游客2023-10-05  31

问题 You cannot cancel your order______you change your mind within three days.

选项 A、as if
B、while
C、so that
D、unless

答案 D

解析 本题考查连词意义及用法。主句为“你不能取消订单”,从句意为“三天之内改变主意”,D项unless意为“除非”,引导条件状语从句,符合句子语境。
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