完型填空。 My name is Li Ming. I live 1 Shijiazhuang. In summer, I like, sitting 2 the window. I can look 3 a big tree. There are three birds 4 the tree (a mother bird and her two babies). But one day, I suddenly found a snake 5 up the tree. It climbed towards the nest (鸟巢). The mother bird chirped (叫)loudly. She flew around the snake. Just at that time, hundreds 6 birds flew here, They began to peck(啄) the snake. The snake 7 off the tree and ran away (逃跑).