问题补充：
The head teacher with his students the park if it tomorrow.
A. is going to; doesn rain
B. are going co; won’t rain
C. is going to; won rain
D. are going to; doesn rain
答案：
(答案→)A. is going to; doesn rain
B. are going co; won’t rain
C. is going to; won rain
D. are going to; doesn rain
解析：with 表示伴随状语。位于动词要和with 前的名词保持一致。在if 引导的时间状语从句，主句用一般将来时，从句用一般现在时代替将来时，故选A
