— May I speak to Mr Smith?
— I am afraid not. He is at a meeting now. It’s not .
A. reliable
B. convenient
C. beneficial
D. available
网友回答
A. reliable
(答案→)B. convenient
C. beneficial
D. available
解析：A reliable可靠的， B. convenient 便利的，C. beneficial有益的，D. available 可获得的，句意：--我可以和史密斯先生说话吗？--恐怕不能，现在他在开会，不方便。所以选B。