There is going to a sports meeting next week. If it we’ll have to cancel it.A. be; will

问题补充：

There is going to a sports meeting next week. If it , we’ll have to cancel it.

A. be; will rain

B. have; will rain

C. be; rains

D. have; rains

答案：

A. be; will rain

B. have; will rain

(答案→)C. be; rains

D. have; rains

解析：句意：下周将有一场运动会。如果天下雨，我们将不得不取消它。There is going to be为There be句型的拓展运用，即某时将会有......，if引导的条件状语从句中用一般现在时表达将来；故选C。