at a college or university in the USA Chinese and other international students must demo

问题补充：

at a college or university in the USA, Chinese and other international students must demonstrate a strong ability in spoken and written English.

A. Having been accepted

B. To be accepted

C. Being accepted

D. Accepted

答案：

A. Having been accepted

(答案→)B. To be accepted

C. Being accepted

D. Accepted

解析：要想被美国的大学接受，外国留学生要有较好的口语和书面语的能力。动词不定式to be accepted在句中作目的状语。