单项选择题

Since 1970, millions of enthusiasts ______ a substance which they believe can remedy the common cold—Vitamin C.

A．have taken
B．have been taking
C．have been taken
D．have being taken
<上一题 目录 下一题>
热门 试题

单项选择题
As, after his death, he defeated the forces of injustice, ______ the position in art that had been kept from him during his life.
A．so did he gain
B．so he gained
C．and he gained
D．and gained
单项选择题
The old family ______ in China has undergone some change since liberation.
A．pattern
B．shape
C．form
D．institution
相关试题