问题补充:
—May I speak to Mr.Smith?
—I am afraid not.He is at a meeting now.Its not .
A. reliable
B. convenient
C. beneficial
D. available
答案:
A. reliable
(答案→)B. convenient
C. beneficial
D. available
解析:B句意:“我可以和史密斯先生讲话吗?”“恐怕不行,他现在正在开会,不太方便。”A:可靠的;B:方便的;C:有益的;D:可利用的,可得到的。