28. As our company relies on quick sales and low profits, we cannot offer long -term _____ facilities. (A)loan (B)debt (C)credit (D)debit 。

6. Much as we would like to do business with you, _____. (A)we are unable to accept your order at the price you requested (B)we will be pleased to fulfill your order No. A116 (C)we are prepared to give a further reduction of 5% i n our quoted price (D)we expect to receive a new supply shortly 。