第二部分:知识运用(共两节,45分)
第一节 单项填空(共15小题;每小题1分,共15分)
21. ––Has ______ problem been solved?
––Not yet. We’re trying to think of ______ way out, but it’s quite difficult to find one.
A. a; the B. the; a C. a; a D. the; the
22. With the development of education, there is an urgent need ______ qualified teachers.