I saw Tom ____ The road just now.A.across B.crossed C.crossing D.acrossing

问题描述:

I saw Tom ____ The road just now.A.across B.crossed C.crossing D.acrossing

本题应选C.
原因:see sb doing sth意为“看见某人正在做某事”,带有正在进行的意思
补充:还有see sb do sth意为“看见某人做了某事”,不带有正在进行的意思
cross是动词,穿过;across是介词,穿过,必须和动词联用,即前面有动词,如go walk等.
go across the road=cross the road.
本题运用see sb doing sth,故选C.
希望能给你一些帮助!