Question

【题目】He has been away from his hometown ________.

A. since a month B. for a month ago C. for a month D. in a month

Answer 1

【答案】C

【解析】句意：他离开他的家乡一个月了。根据句意此题应和时间段连用，表示做某事做了多长时间了。for a month=" since" a month ago；in a month一个月之后，用于将来时态。故选C。