单项选择题
The little boy came riding full speed down the motorway on his bicycle，（）it was!
A.What a dangerous sceneB.What dangerous a sceneC.How a dangerous sceneD.How dangerous the scene
单项选择题 It is helpful to put children in a situation（）they can see themselves differently.
单项选择题 He often paid a visit to his friend（） he was busy.
单项选择题 15处选择（）
