2. 外语
  3. Variables such as individual and corporate behaviour ______ nearly impossible for economists to forecast economic trend with pre

Variables such as individual and corporate behaviour ______ nearly impossible for economists to forecast economic trend with pre

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问题 Variables such as individual and corporate behaviour ______ nearly impossible for economists to forecast economic trend with precision.
选项 A、make
B、make it
C、making
D、makes it
答案B
解析
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