We are in receipt of your letter dated Jan 8, ___

单选题 We are in receipt of your letter dated Jan 8, ____ we are pleased to learn that you want to order 100 tons of the subject goods.

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

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1 _____ we appreciate your counter-offer, we your prices too low to be acceptable.

A．Meanwhile
B．While
C．However
D．Whether

2 Please send us as soon as possible samples of the following goods _____ listed in your current catalogue.

A．which
B．as
C．what
D．for which

3 Please note that Item no．789 can be certainly promised for immediate shipment ____ receipt of your order.

A．if
B．whether
C．upon
D．at