Question

 The headmaster was dismissed three months ago. The post is too important to leave _______ any longer, especially before the college entrance examination.

A. alone　　　　　　B. away                   C. vacant        　D. occupied

Answer 1

解析：选C。考查形容词辨析。句意为：校长三个月前被解雇了。这个职位太重要了，不能空缺着，尤其是在大学入学考试之前。alone单独的；away远离；vacant(工作)空缺的；occupied占据的。