单项选择题
We regret （） that we can’t accept your offer.
A.of saying B.for saying C.about saying D.to say
单项选择题 （） quality and prices are satisfactory, there are prospects of good sales here.
单项选择题 The company in question does steady export business, （） satisfactory results in overseas markets.
单项选择题 The bigger your audience,（） complicated communication channel choice becomes.
