问题描述：
没看懂结构
an emergency plan is currently being devised should the negotiation with members of the strike get worse.
should是什么词啊?句子的主谓宾是?
an emergency plan is currently being devised should the negotiation with members of the strike get worse.
should是什么词啊?句子的主谓宾是?
问题解答：
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