The one concern for parents and students is if the student pursues their university educa

问题补充：

The one concern for parents and students is if the student pursues their university education in a foreign country, the student will not have the opportunity to establish social contacts in China.

A. what

B. that

C. whether

D. /

答案：

A. what

(答案→)B. that

C. whether

D. /

解析：表语从句为陈述一个事实，故答案为B。