GWD-29-Q29

Most of Portugal’s 250,000 university students boycotted classes in a one-day strike to protest a law that requires them to contribute $330 a
            year toward the cost of higher education, previously paying $7 per year.B

1. year toward the cost of higher education, previously paying $7 per year
2. year toward the cost of higher education, for which was previously paid $7 per year
3. year, compared to the previously $7 per year, toward the cost of higher education
4. year toward the cost of higher education, instead of the $7 per year required previously
5. year as opposed to the $7 per year required previously for the cost of higher education

答案是D，可我觉得不能排出A 阿，A哪里错了阿，解释说缺少paying逻辑主语，可我觉得这个逻辑主语就是 university students 阿，所以没有错误啊

B错在which 后不完整

C compared 错

Eas opposed to 话多了

请问A到底哪里错了，NN榜帮我把

A的paying有很大的问题

它可以是: 1. 伴随状语，做前面发生的事情所伴随的结果，但语意不通

                2. 省略掉连接词的状语，而逻辑主语是university students, 可是语意也怪

                3. 省略掉连接词的状语，主语是high education, 也不通，higher education不会

                    自己paying

I go for B too, Buddy!

I dont get it.

YEs Which refers to "higher education", so the sentence become

for higher education was previously paid 7$ per year.   = 7$ per year was previously paid for higher education

maybe this sentence is wrong because the passive usage of "pay"?  dose it seem awkward to say something like "5$ was paid"?  

呃，我认为paying的逻辑主语是law吧。