题目

按要求改句子。（1—4的划线部分提问） 1. Mum is looking for the key to the room. ___________________________________________? 2. Jack is late for school. ___________________________________________? 3. The building is thirty years old. ___________________________________________? 4. The girls are dancing in the playground. __________________________________________? 5. There is something wrong with my bike.（改为否定句） _______________________________________________. 6. is/is/Mary/she/sitting/no/not（连成问答句） ____________________________________________根据平面镜成像的特点，作出图中物体AB的像．