Do you think the presidential election between Obama and Romney is worthy ?
A. discussing
B. to be discussed
C. to discuss
D. being discussed
网友回答
A. discussing
(答案→)B. to be discussed
C. to discuss
D. being discussed
解析：考查固定词组。固定词组 sth be worthy to be done=sth be worthy of being done某事值得被做；句意：你认为在奥巴马和罗姆尼之间的竞选值得被讨论吗？故B正确。