it rain tomorrow we would have to call off the hike.A. WillB. WouldC. ShouldD. Were

问题补充：

it rain tomorrow, we would have to call off the hike.

A. Will

B. Would

C. Should

D. Were

答案：

A. Will

B. Would

(答案→)C. Should

D. Were

解析：

试题分析:考查虚拟语气。从后句would have to可知此处是表示对将来的虚拟，if从句中如果有should、had、were则可以省略if把这些词提前，构成倒装语序，所以C选项正确。句意：如果明天下雨的话，我们就不得不取消远足。