单项选择题
Mr. McNeil asked Mr. Don Bradley to ship the goods（）air.
A.by B.on C.at D.in
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:（）
单项选择题 （）,three months ago I could not have negotiated this deal.
