The boss took it for granted that his secretary should keep him well-informed.
A.assumed that it was true without doubt
B.believed that it was true without making sure
C.agreed that it was necessary
D.thought that it was beneficial
参考答案:B
解析:[分析] 词义辨析take sth. for granted 认为某事理所当然;选项A意为:设想它毫无疑问地是对的;选项 B:相信它是对的而不经证实;选项C:同意它是必要的;选项D:认为它是有利的;因此B为答案。