单项选择题 No credit will be offered（）you place an order for more than 40.000 units.

单项选择题 A:Good weekend? B:（）

单项选择题 Mr. McNeil asked Mr. Don Bradley to ship the goods（）air.

单项选择题 （）the Manager’s not available at the moment. But the Assistant Manager is here.How Can I help you, madam?

单项选择题 A:Welcome to Bibury Systems. B:（）