阅读下面短文，用方框内所给词汇的适当形式填空，使短文语义完整。

 One hot day, an ant was ____  for some water. After walking around ____  some time, she came to a river. To get to the river, she had to climb up a piece of grass.____ the ant was making her way up, she fell into the water.

 Just then a dove up a ____ tree saw her. When the dove saw that the ant was in trouble, he ____  picked off a leaf and dropped ____ into the water near the ant. The ant moved towards the leaf____ climbed up there. Soon it carried her safely to dry ground. Just at that time, a hunter (猎人) nearby was going to shoot the dove. As soon as the ant found ____ the hunter was going to do, she quickly bit (咬)____  on the heel. Feeling the pain, the hunter ____  his gun. The dove was quick to fly away to safety.

如图，已知过A、C、D三点的圆的圆心为E，过B、E、F三点的圆的圆心为D，如果∠A=57°，那么∠ABC= ____°．

张老师在指导学生记忆化学方程式时指出很多反应可以归纳，如：氧化钙、氢氧化钙、碳酸钙等与盐酸反应时生成物中都含有氯化钙和水．同学们兴趣很高，也进行了归纳：

I studied English        my brother.