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By the end of last week, she______in the west of China for two months helping the homeless children.

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时间:2024-08-17 10:35:07
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By the end of last week, she______in the west of China for two months helping the homeless

【专家解说】:

答案:D

解析:
试题分析:根据时间状语By the end of last week到上周末为止,可知本句描述的是过去某时之前已经完成的动作,故用过去完成时态,选D。
考点:考查动词时态

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