问题补充:
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
答案:
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。