题目内容：

Look,the students are discussing ________.选哪个
A.about which super star to vote for
B.about to vote for which super star
C.to vote for which super star
D.which super star to vote for
选哪个,为什么
要专业,还有哪种情况和这个一样,举个例子.

优质解答

discuss是及物动词 直接接宾语 后面接某事时不加介词 故排除A B 且没有discuss to do sth.的用法 排除C 选D 附：discuss常见用法是：discuss sth with sb