At school some students are active some are shy yet they can be good friends with one a

问题补充：

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

答案：

(答案→)A. while

B. although

C. so

D. as

解析：本题考查并列连词。题干句意为：在学校，一些学生很活跃而一些却很害羞，然而他们都可能彼此成为好朋友。根据句意选while，表示两个分句中两种情况的对比。