12．There is a dog ________ in the yard（院子）now． A．run B．running C．_英语解答

12．There is a dog ________ in the yard（院子）now． A．run B．running C．runs D．is running

人气：234 ℃　时间：2020-04-15 05:05:40

解答

这是一个现在进行时态,be动词后加动词ing形式.选B