Mr. Li often tells my father that it isnecessary that he drinks a cup of water after he ge

发布时间：2020-08-17 13:31:56

Mr. Li often tells my father that it isnecessary that he drinks a cup of water after he gets
A     B            C                      D
up.C drinks---drink 

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(答案→)C drinks---drink 
解析：这里用should drink, should可以省略。
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