_______ your decision to place regular orders with us, we respectfully request that you _______ us with two references for the initial purchase.

_______ your decision to place regular orders with us, we respectfully request that you _______ us with two references for the initial purchase.

A.As we thank, should give

B.When appreciating, will supply

C.Because we thank, provide

D.While appreciating, furnish

正确答案是D