_____in 1636,Harvard is one of the most famous universities in the United States.

问题描述:

_____in 1636,Harvard is one of the most famous universities in the United States.
A Being founded B It was founded C Founded D founding
能不能解释一下为什么选C,不能选其它的

found 是动词原形,建立的意思,哈佛大学是被建立,所以是founded,排除D.
这个句中有逗号,而前后无连接词,所以前面应该是非谓语动词,being可省,排除A,B.
所以选C.