问题补充：
单选题Tounderstandthecomplexsituationcompletelyrequiresmorethoughtthan________sofar.A.gaveB.has givenC.has been givenD.is being given
答案：
C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
时间：2020-02-27 12:47:56
单选题Tounderstandthecomplexsituationcompletelyrequiresmorethoughtthan________sofar.A.gaveB.has givenC.has been givenD.is being given
C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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