To understand the complex situation completely requires more thought than so far.A. gaveB

发布时间:2020-08-16 20:45:52

To understand the plex situation pletely requires more thought than      so far.
A. gave
B. has given
C. has been given
D. is being given

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A. gave
B. has given
(答案→)C. has been given
D. is being given
解析:由so far 可知用现在完成时,因为so far是现在完成时的标志,由语意知此处为被动,因此选择C项
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