Since 1970, millions of enthusiasts______a substance which they believe can reme

游客2023-11-16 45

问题 Since 1970, millions of enthusiasts______a substance which they believe can remedy the common cold — Vitamin C.

选项 A、have taken
B、have been taking
C、have been taken
D、have being taken

答案 B

解析由题千中的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/3190955.html

相关试题推荐

随机试题

最新回复(0)

Scientistswhobelievecellphonesaredangeroushavebeenthrowingouthypo