it rain tomorrow we would have to put off the sports meeting.A. WereB. WouldC. DoesD. S

问题补充：

it rain tomorrow, we would have to put off the sports meeting.

A. Were

B. Would

C. Does

D. Should

答案：

A. Were

B. Would

C. Does

(答案→)D. Should

解析：考查虚拟语气。If引导的虚拟条件句，当从句中含有were/ should/had时，常省略if，把提到句首，were/ should/had；对现在虚拟，从句用一般过去时，be动词用were，对过去虚拟，从句用过去完成时；对将来虚拟，从句用一般过去时或should/would+动词原形；根据tomorrow可知，是对将来进行虚拟，排除A、B；C项不用于虚拟语气，排除C，故选D。