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單項選擇題

（），we are airmailing you our latest quotation-sheet.

A．As request
B．At request
C．As requested
D．At requested

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單項選擇題

We have received your letter of September 12，（）we are glad to know that you are interested in our electric heaters.

A.which
B.atwhich
C.fromwhich
D.inwhich

單項選擇題

We are（）to have your enquiry for Sewing Machines.

A.please
B.pleased
C.pleasure
D.in pleasure

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