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Since 1970, millions of enthusiasts______a substance which they believe can remedy the common cold — Vitamin C.
Since 1970, millions of enthusiasts______a substance which they believe can remedy the common cold — Vitamin C.
admin
2012-06-10
35
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]。
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专业英语四级
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