找出错误的地方并改正。
The old man as well as his children were excited .
____
生活和工作中使用的滑轮如：A．国旗杆顶部的滑轮；B．电动起重机吊钩上的滑轮，属于动滑轮的是 ____
宿迁市的地形大部分是： （ ）
