At school, some students are active some are shy, yet they can be good friends
with one another.
A. while
B. although
C. so
D. as
网友回答
(答案→)A. while
B. although
C. so
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A。