【GWD的几道题，请大家帮帮忙~~】

水色青空

额.....由于没有答案解释，所以就直接发上来问问大家了，知道的朋友帮帮忙咯~万分感谢~

Q26:

In his experiments with gravity, Isaac Newton showed how the motion of each planet in the solar system results from the combined gravitational pull of the Sun and of all the other planets, each contributing according to their mass and distance from the others.

1. of all the other planets, each contributing according to their
   
2. of all the other planets, with each of them contributing according to their
   
3. all the other planets, each of which contributing according to its
   
4. all the other planets, each contributing according to its
   
5. all the other planets, each of which contribute according to their
   

额,这道题想问的就是，为什么each 后面没有加of?正确答案是D.




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.

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
   

这道题纠结一点，我选的是C，正确答案是D，但是我觉得D用了INSTEAD OF 好像不太妥。。。。。。而且我觉得C也没有错呀？？。。。。大家帮帮忙解释一下。。。感谢感谢~~~~~

Sherry_Wong

这不是语法么，怎么跑逻辑版来了？
each+后面的 是独立主格成分

水色青空

~~~~(>_<)~~~~

不好意思发错了额

不过还是感谢回答啊