[单选题] We have received your enquiry of October 15 ______ we learn that you are interested in our black tea.

1、[单选题]Please offer separate price ____ each grade.

• A、to
• B、in
• C、at
• D、for

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2、[单选题]I wonde redifin future you would allow me to settle my accounts ____ monthly installment.

• A、on
• B、by
• C、in
• D、over

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3、[单选题]We would ask you to do every thing probable ____ punctual shipment.

• A、ensure
• B、ensuring
• C、ensured
• D、to ensure

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4、[主观题]敬启者：遵照你方10月27日来信的要求，我方特此寄送所需的形式发票一式三份。请注意我方的报价有效期一直截止到11月15日，我方期望及早收到你方的订单。要注意我方的缝纫机销路不错，目前有关询盘许多，请及时采取必要的措施。×××谨上

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5、[主观题]We intend that anenquiry for bicycles shall be sent to the manufactures in Britain.

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