若一个点到圆心的距离恰好等于半径，则此点必在______；若一个点到圆心的距离大于半径，则此点必在______；若一个点到圆心的距离小于半径，则此点必在______．

Had it not been for the haze（霾）weather phenomenon, there         fewer car accidents in Beijing then．

A．would have been

B．were

C．may be

D．would be