Tom often helps the old people___ the road.A.cross B.crosses C.crossing D.croossed

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Tom often helps the old people___ the road.A.cross B.crosses C.crossing D.croossed
Tom often helps the old people___ the road.A.cross B.crosses C.crossing D.croossed

Tom often helps the old people___ the road.A.cross B.crosses C.crossing D.croossed
cross the road与across the road的区别都是“横穿马路”之意,但是cross是动词,across为介词,cross the road = go across the road
过去分词:crossed
现在分词:crossing
第三人称单数:crosses
选a