问题 选择题

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

A.gave

B.has given

C.has been given

D.is being given

答案

答案:C

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

单项选择题
单项选择题 A1/A2型题