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China has ______ for over 20 years.A、developB、developedC、developingB由题干中“for”
China has ______ for over 20 years.A、developB、developedC、developingB由题干中“for”
游客
2025-07-02
5
管理
问题
China has ______ for over 20 years.
选项
A、develop
B、developed
C、developing
答案
B
解析
由题干中“for”可知本句应为完成时态“have done”的形式。选项A为动词原形,而has后面需加动词过去分词,故不能选,选项C为现在分词,也不符合题意。只有选项B为develop的过去分词,符合题意,故选B。
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