问题补充:
— 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
答案:
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。