We were asked to stay in the classroom after school 改为一般疑问句
Were you aasked to stay in the classroom after school ?
There were some houses on the hill 改为反意疑问句
There were some houses on the hill, weren't there?
The famous statue was made by a little boy 就画线部分提问
如果是对a little boy提问就是 Who made the famous statue?
如果是对the famous statue提问 就是What was made by a little boy?
因为楼主没有明确说出 到底是对哪个部分提问 就自行设定了
希望能够帮到楼主