In our school, some students are active some are shy, yet they can be good friends with one another.
A. so
B. although
C. while
D. as
网友回答
A. so
B. although
(答案→)C. while
D. as
解析：考查连词：A. so那么B. although虽然C. while然而D. as当…时候，因为，句意：在我们学校，一些学生很积极，而一些人很害羞，然而他们可以成为很好的朋友。选C。