试题：
We need to _____ how we are going to get there.
A．work onB．work upC．work outD．work at
动词, 动词短语 2016-05-27

答案：

我来补答
C
考查短语辨析。work on 从事，work up 刺激，激起，work out 解决，计算出，work at在什么上班，从事，句意：我们必须计划好怎样到那。所以选C。
 
 
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