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In recent years, oil______ (substitute) for certain natural materials.has substi
In recent years, oil______ (substitute) for certain natural materials.has substi
游客
2023-09-27
13
管理
问题
In recent years, oil______ (substitute) for certain natural materials.
选项
答案
has substituted
解析
动词时态。根据时间状语in recent years(通常用于完成时态),此处需用现在完成时。
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