in 1636 Harvard is one of the top universities in the United States.A. Being foundedB. I

问题补充：

in 1636, Harvard is one of the top universities in the United States.

A. Being founded

B. It was founded

C. Founded

D. Founding

答案：

A. Being founded

B. It was founded

(答案→)C. Founded

D. Founding

解析：本句中的动词found成立，建立，与句子主语Harvard构成逻辑上的被动关系，所以使用过去分词，既表示被动也表示已经完成。句义：在1636年成立的哈佛大学是美国最好的大学之一。故C正确。