I’m sorry，the sales manager is not .He is on the telephone at the moment.
A. reasonable
B. suitable
C. valuable
D. Available
网友回答
A. reasonable
B. suitable
C. valuable
(答案→)D. Available
解析：句意：很抱歉，销售经理这会不方便。他正在接电话。Reasonable合理的；suitable适当；valuable有价值的；Available空闲的。故选D。