一道PREP语法

Like any star of similar mass would do, once the Sun has exhausted the hydrogen in its core, it expands into a red giant, eventually ejecting its outer envelope of gases to become a white dwarf.

(E) As would be the case with any star of similar mass, once the Sun exhausts the hydrogen in its core, it will expand into a red giant and eventually eject

首先A选项应该是错的，因为Like只能接词，不能接句子。 

D和E考的语法点是As的用法。 AS与Like不同的是As是连词，连词要接句子，就是要有主语和谓语动词。 D和E都有，E在As后面省略了一个It。 但As和Like相同的地方就是他们指代的东西都要严格的和主句的主语相并列。 Star就要和Sun并列，而不能和Hydrogen并列。 如果觉得E的As引导的句子很奇怪，在As后面加上省略的主语It感觉就会好一些。