题目内容
（请给出正确答案）
提问人：网友geyinglong
发布时间：2022-01-07
[主观题]
If we don't take action on this issue within the next five years, we won't have anything t
o do ______ to campaign about.
A．in ten years' time
B．in twelve years' time
C．in twenty years' time
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