( )12.You should know what to do by now,after ---- told so o

问题描述:

( )12.You should know what to do by now,after ____ told so often.A.being B.be C.been
请翻译这句话,并详解,为什么选A,
1个回答 分类:英语 2014-10-08

问题解答:

我来补答
after 介词,介词后边跟动词的话要变成ing形式.
 
 
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