根据上面的统计图，回答下面的问题：

如图，已知BD⊥AC，EF⊥AC，D、F为垂足，G是AB上一点，且∠FEC=∠GDB，

试说明：∠AGD=∠ABC．

    Hello!My name is Bob. My classroom is not big but nice. There are 21 desks and 20 chairs. 墙上有一些画和一幅地图。Mrs Brown is our English teacher. She is from a big city.She is nice. Her husband Mr Brown is a teacher too, but he isn't in our school. Tom is my good friend. We like playing football on Saturday. Where is my football? It is under my desk.