Iwassobusywithmyownbusinesst

发布时间：2020-07-28 16:45:14

I was so busy with my own business that I forgot ________ him back．A.callingB.to callC.to have calledD.to calling

网友回答

B解析动词forget的用法是forget to do sth意思是“忘记做某事”。比较：forget doing sth忘记曾经做过某事。
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