Where and when the meeting is to be held our headmaster.A. depend onB. is up toC. relies

问题补充：

Where and when the meeting is to be held our headmaster.

A. depend on

B. is up to

C. relies on

D. decides by

答案：

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。