At school, some students are active some are shy, yet they can be good friends with one another.
A. although
B. while
C. so
D. as
网友回答
A. although
(答案→)B. while
C. so
D. as
解析：考查连词辨析。A尽管；B当…时；然而；尽管；C于是；D随着；句意：在学校里，有一些学生很积极，然而也有一些很害羞，可是他们都可能成为好朋友。故B正确。