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15.The Williams moved to a safer area and since then they ______ back to their past life.(  )
A.hadn't lookedB.didn'tlookC.wouldn't lookD.haven't looked

分析 威廉姆斯一家人搬到了一个更加安全的地方,而且自那以后他们再未回头看他们过去的生活.

解答 答案:D
解析:A:过去完成时;B:一般过去时;C:过去将来时;D:现在完成时.根据横线前面的"自从那以后(一直到现在)"可知本题该使用现在完成时(表示从过去某一时间点发生的动作一直持续到现在),因此结合所给选项分析可知本题答案为D选项.

点评 本题考查时态,做此类题题目时一定要仔细分析句子结构并结合句意确定句子所需时态;再结合选项分析及其它要求选出最终答案.

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