II．语法单项填空。(共15小题；每小题1分，满分15分)
从A、B、C、D四个选项中，选出可以填人空白处的最佳选项，并将答案填在答题卡上。
21.We didn’t expect that Sara was made ____ of the Students’ Union.
A. a chairman B. the chairman C. chairman D.chairmen
22.This country ____ many islands,the biggest of which lies in the southeast.
A. is made up B.consists of C.is made of D.is consisted of
