By the end of last week, she______in the west of China for two months helping the homeless children.
來源：新能源網(wǎng)
時(shí)間：2024-08-17 10:35:07
熱度：
By the end of last week, she______in the west of China for two months helping the homeless
【專家解說】：
答案：D
解析：
試題分析：根據(jù)時(shí)間狀語By the end of last week到上周末為止，可知本句描述的是過去某時(shí)之前已經(jīng)完成的動(dòng)作，故用過去完成時(shí)態(tài)，選D。
考點(diǎn)：考查動(dòng)詞時(shí)態(tài)
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