The flowers his friend gave him will die unlessevery day.A. wateredB. wateringC. waterD. t

发布时间：2020-08-15 00:54:29

The flowers his friend gave him will die unless    every day.
A. watered
B. watering
C. water
D. to water

网友回答

(答案→)A. watered
B. watering
C. water
D. to water
解析：unless后接省略形式。flowers和water之间是关系要用被动语态。同时unless从句的主语与主句的主语相同，常常省略其相同成分，故选A项，表示被动。动词-ing形式表示主动；不定式常用作目的状语。
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