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Since 1970, millions of enthusiasts ______ a substance which they believe can re
Since 1970, millions of enthusiasts ______ a substance which they believe can re
游客
2024-10-23
30
管理
问题
Since 1970, millions of enthusiasts ______ a substance which they believe can remedy the common cold — VitaminC
选项
A、have taken
B、have been taking
C、have been taken
D、have being taken
答案
B
解析
由题干中的Since 1970可知,主句的时态应使用现在完成进行时,故答案为B 。
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