If you have not received__________ of your order within two business days, please contact our customer service center.

2023-05-26

A.confirmation
B.resignation
C.preparation
D.expectation

参考答案:A

解答此题的关键是快速把握整句的句意。没有收到和订购相关的确认信息时.联系顾客服务中心,分析句意可以得知空格处应为“订单确认书”。

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