21£®The Song Hua River flows ____ Jilin city.

       A£®across         B£®over             C£®through          D£®in

22£®Though the city was ___ attack, the people of the city never ___.

       A£®in; gave up     B£®in; gave in        C£®under; gave in            D£®under; give out

23£®____ the help of his English teacher, he made ____ progress in English.

       A£®Under; a great    B£®Under, great      C£®With; great       D£®With; a great