Question

We need to _____ how we are going to get there.

A．work on

B．work up

C．work out

D．work at

Answer 1

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。