![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-53/ti_inject-812ce.png)
Make sentences with the structure above please. • There are two......in the......., one is ........ Under which......play the most important role, and the other is ...., whereby.......has been in a dominant position. For example, .....belongs to..... because ....are the main sources of ..... Thus, the differences between ... and .....