单项选择题

We have received your enquiry of October 15 （） we learn that you are interested in our black tea.

A.in which
B.from which
C.which
D.at which

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We （） be glad if you could send us samples and quotatio...

单项选择题We （） be glad if you could send us samples and quotations.

A.shall
B.will
C.should
D.could