题目内容：

25.Tom wants to know if you will have a picnic tomorrow.Yes.But if it__,we'll play chess instead.
A.will rain B.rained C.is raining D.rains

优质解答

Tom wants to know if you will have a picnic tomorrow.Yes,But if it_rains_,we'll play chess instead.汤姆想知道明天你们是否去野餐.是的.但是如果明天下雨,我们就玩象棋.这句话是if...引导的条件句的固定表达方...