分类：教育/科学-外语学习
问题：Lasttermourmathsteacnersetsuchad? 
Last term our maths teacher set sh a difficait examination problems____.A.that  B.as  C.so that
回答：Last term our maths teacher set such a difficait examination problems____. A.that B.as C.so that
选a,that few of us worked it out.  such ...that