单选题
The CEO mentioned to the board members that it is not ______ to disclose the upcoming merger which can cause turmoil among employees.
【正确答案】
C
【答案解析】[解析] 单词形态：形容词
1．这是一道单词形态选择题，选项均为appropriate的不同形式。
2．be动词后应接形容词或名词，名词appropriateness意为“适当”，和原文文意不符，因此形容词C．appropriate为正确选项。