As we are heavily committed,we are sorry that we are not in a（）to accept new orders.

填空题We shall book a trial order with you,（）goods are competitive in price and of good quality.

填空题Our foreign trade policy is based（）equality nad mutual benefit.

填空题We are awaiting your revised draft（）keen interest.

填空题We are glad to enter （） business relations with your corporation.

填空题We have established an irrevocable letter of credit（）your favour with the Bank of China,Guandong．