The tree needs ___ at once.A.be watered B.to water C.water D
The tree needs ___ at once.A.be watered B.to water C.water D.watering.该选哪个啊…… 首先哈,need+s 是实义动词……要need to do,而A的被动语态意思对的,可是木有to,排除掉……B water是指人water树,应用被动语态,排除. C可不可以用作名词啊?……所以我觉得选C吧…… D选项求分析.