--- What are you busy with?
--- The conference in our city next week.
A. held
B. to be held
C. be holding
D. will be held
网友回答
A. held
(答案→)B. to be held
C. be holding
D. will be held
解析：考查非谓语动词，conference与hold为动宾关系又因为时间是在下周所以用不定式的被动式作定语。句意：你在忙什么？下周要在我们城市举行的会议。