You should wash your hands before-----meals.A:have B:having

问题描述:

You should wash your hands before_____meals.A:have B:having C:to have说答案,再说为什么选,
1个回答 分类:英语 2014-10-18

问题解答:

我来补答
B,before是介词,后面加宾语,动名词做宾语
 
 
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