Where and when the meeting is to be held our headmaster.
A. depend on
B. is up to
C. relies on
D. decides by
网友回答
A. depend on
(答案→)B. is up to
C. relies on
D. decides by
解析：
试题分析: 句意：何时何地举行会议是由我们校长决定。A依赖；B由某人决定；C依赖，依靠；D决定。分析句子结构可知此处缺少谓语动词，动词和主语Where and when the meeting is to be held之间是被动关系，排除ACD选项，答案选B。