what should i do,doctor?A.to keep healthy B.keeping healthy

问题描述：

what should i do,doctor?A.to keep healthy B.keeping healthy 为什么不选B
1个回答 分类：英语 2014-12-07

问题解答：

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Because
if you choose b,the complete answer will be ' you should keeping healthy'
if you choose a,the complete answer will be 'you should keep healthy'
 
 
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