They don't know if it ___ tomorrow.If it ___,they will not go to the parka.will rain; will rain b.rains; rainsc.rains; will rain d.will rain; rains为什么选D?两个if引导有何区别?

I don‘t know if they ——(have)a party next week.是will have . tomorrmw,don't,have,if,picnic,know,they,I,will,a(.) 英语翻译i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know I really don't know if they ____ ____a party tomorrow.If they____I really don't know if they will have a party tomorrow.If they____(do还是have),I will call you. I don't know if they will make anybody else's day ,but they made mine .啥意思 I don't know _____ they have passed the exam or notA.where B.if C.whether D.when I don't know ____ they have passed the exam.A.what B.if C.when D.where谢谢了, I don't know if they _______(take) part in the activity last Sunday填适当形式 1道英语填空题填单词I don't know if they can p______ the information about that plan. I don't know if he ____(be) free tomorrow. what if I don't know anyone 的意思 You don't know even if I vanish from your what if I don't know anyone?同义句转换 What,I,anyone,don't,if,Know连词成句 What,I,anyone,don't,if,Know,连词成句 I don't know if he ____ ( come ) Hao can i know ,if you don't say I don't know is whatI don't know if I can still not able to persistDon't know if I couldDo not know