________itraintomorrow,wewouldhavetocancelthefootballma...

问题详情：

________ it rain tomorrow, we would have to cancel the football match.

【回答】

Should　本句中条件句是对将来状况的虚拟，当条件句中有助动词had, were, should时，可以将if省略，把这些助动词放在句首，构成倒装结构。

知识点：虚拟语气

题型：阅读填空