Since 1970, millions of enthusiasts ______ a substance which they believe can re

游客2024-10-23 52

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 。

转载请注明原文地址:https://tihaiku.com/zcyy/3814287.html

相关试题推荐

随机试题

最新回复(0)

Since1970,millionsofenthusiasts______asubstancewhichtheybelievecanre